Lady Midnight Study Guide

Parabatai and foster brother to Jace. Brother to Isabelle and the late Max. Eldest child of Robert and Maryse. Boyfriend of Magnus Bane. Hero of the Dark War. Father of Max, a warlock child he adopted with Magnus and was named after his brother.

Daughter of Patrick and Jia Penhallow. Wife of Helen Blackthorn. Together, they 'study the wards' at Wrangel Island - a barely veiled punishment of Helen's after the Dark War for being half-faerie. Both Jia Penhallow (Consul and Aline's mother) and Robert Lightwood (Inquisitor) insist it is also for Helen's protection. 

Previous head of the Los Angeles Institute. Father of the Blackthorn children. Brother of Arthur Blackthorn.

Was once kidnapped by the faeries with his brother Arthur and held in the Seelie Court. In that time, he fell in love with and had two children, Helen and Mark, with a Seelie Princess named Nerissa. When he returned home, he married a Shadowhunter, Eleanor. When Mark and Helen were brought to his doorstep after their mother died Eleanor accepted them as her own children. He and Eleanor eventually had Julian, Livvy, Ty, Dru, and Tavvy before Eleanor died. 

When Sebastian attacks the Los Angeles Institute, Andrew is forced to drink from the Infernal Cup and become Endarkened. His son Julian killed Andrew when the Endarkened attacked the Gard in Alicante.

Deceased

Member of the Blackthorn family who lived before it was legal for Shadowhunters and Downworlders to be in a relationship. She fell in love with Malcolm Fade and the two were going to run away together, but her family found out and had her sent to the Iron Citadel and become an Iron Sister to avoid their union. At least, that's what they told everyone. In reality, they walled Annabel up in an iron cell and let her die. Malcolm lived for centuries believing that Annabel was an Iron Sister before figuring out the truth - thanks to Edgar Allen Poe's poem Annabel Lee (Poe had heard Annabel's real story from Downworlders). Malcolm went to the Unseelie King and asked if there was a way to bring Annabel back from the dead, which he has tried to do ever since learning the truth. He was killed by Emma before he succeeded. 

Deceased

Vampire Representive on the Shadowhunter Council. Leader of the Los Angeles clan.

He opens a pizza parlor which Emma is surprised has a surprisingly good sauce recipe. Julian realizes that Nightshade is putting addictive powders in the sauce, made from dark magic. When Julian is questioned about the investigation into Malcolm and the thirteen murders, he insists that Arthur was not part of the investigation much because he was busy investigating Nightshade instead. Nightshade is arrested for using dark magic and especially on mundanes.

Brother of Andrew Blackthorn. Uncle to the Blackthorn children. Head of the Los Angeles Institute. 

Was once kidnapped by the faeries with his brother Andrew and held in the Seelie Court. While Andrew fell in love with a Seelie Princess named Nerissa and had two children, Arthur had a much harder time and was tortured by the Fair Folk. His mental state was never particularly stable afterward. 

He was at the London Institute when it was attacked, but the Shadowhunters were able to get away. Agreed to travel to the Los Angeles to run the Institute and raise his nieces and nephews. However, after the attack his mind broke completely. He was unable to differentiate present from past the majority of the time, heard voices that he claimed to only be able to stop if he drew blood, and potentially had visions. Although he technically lead the Institute, he actually locked himself in his attic office while his nephew Julian ran the Institute and raised his siblings. Julian is able to get a tonic from Malcolm that allows Arthur to think quickly for a small amount of time, though Julian uses it as little as possible since it leaves Arthur with debilitating headaches. Arthur is present when the Faerie Convoy arrives with Mark, agreeing to let the Shadowhunters investigate the murders so Mark can leave the Wild Hunt and return to his family. Arthur does very little to assist the investigation, though he does make occassional appearances when necessary. When the investigation is solved and Robert Lightwood questions Arthur about why he was not more involved with the investigation, Julian reveals that the vampire representative to the Council, Anselm Nightshade, has been using dark magic in his L.A. pizza parlor recipes. Julian lies and says that Arthur was investigating Nightshade while the others investigated Malcolm. 

Member of the Los Angeles conclave who Emma has dated and broken up with several times. 

Demon mark: dark blue skin and white hair.

Diana works with Catarina to investigate the thirteen murders around Los Angeles. With Catarina's help, Diana discovers Malcolm's history with Annabel Blackthorn and realizes that he is behind the murders. 

Raised as Clary Fray. Daughter of Jocelyn Fray (previously Fairchild) and Valentine Morgenstern. Stepdaughter of Luke Garoway. Sister of Jonathan (also known as Sebastian). Best friend and parabatai of Simon Lovelace. Dating Jace Herondale. Hero of the Mortal War and the Dark War. Head of the New York Institute with Jace Morgenstern.

A friend of Emma, she was at Isabelle and Simon's engagement party when Magnus was informed of necromantic activity in Los Angeles. She, Jace, Magnus, Alec, and Robert left the party and learned the truth about Malcolm and how the L.A. Institute investigated for the faeries to have Mark returned to them. Both she and Jace argue in favor of the Blackthorns receiving no penalty.

Shadowhunter originally from the Institute in Mexico City, also called the D.F. for Distrito Federal. Staying at the Los Angeles Institute during her travel year. While in school, studied the Cold Peace and its ramifications extensively. Ex-girlfriend of Diego Rocio Rosales, the two have rekindled their relationship. Torn between Diego and Mark. 

Her uncle was the previously head of the Institute during the Dark War but her mother became the head after Cristina's uncle was killed in the Dark War. Cristina and her family were sent away from the Institute during the Dark War for their protection. Cristina was dating a member of the D.F. conclave, Perfect Diego, and scheduled to bond Diego's brother, Jaime, as parabatai when she overheard Jaime talking about how their family would use their influence over Cristina to take control of the Institute from Cristina's mother. Cristina left the Institute to go to L.A. without telling either of them, refusing to take Diego's calls. During the investigation into the murders, which Cristina insists on being involved in, Diego arrives in L.A. to investigate for the Centurions. He explains to Cristina that he and Jaime were not plotting against her together, just Jaime, and Diego was going to try to convince her not to become is parabatai. Diego insists that he loves her and that he came to L.A. in part to make sure she was okay. Diego helps the rest of the Institute to investigate the murders, arguing in the Blackthorns favor when the investigation is done so they are not punished. In this time, she grows quite close to Mark and helps him to acclimatize back to to life outside of the Wild Hunt and is torn between her growing feelings for Mark and Diego's insistence that he loves her. 

Part of the Los Angeles conclave who is employed as the Blackthorn's tutor, though she does not live at the Institute. 

Julian has asked her to take over the Institute from Arthur, but she refuses to do so - though she won't give any reasons. She helps the Blackthorn children investigate the murders and is one of the few Shadowhunters to know that Mark is at the Institute. Though she helps, she is often off doing mysterious things that she does not tell the others about. Julian knows that she has secrets about her past that he does not know about, but he trusts her. She gets help from her friend Catarina Loss and discovers that Malcolm is behind the murders around the same time as the Blackthorns, arriving at the convergence while Tavvy is chained to the table. She confronts Malcolm and learns the truth of his past while the others hide. She fights with them against Malcolm's necromantic Followers.

Centurion originally from the Institute in Mexico City. Ex-boyfriend of Cristina Mendoza Rosales, the two have rekindled their relationship. Known as Perfect Diego by Emma and the Blackthorns. 

Was dating Cristina, who was also scheduled to bond Diego's brother, Jaime, as parabatai, when Cristina overheard Jaime talking about how their family would use their influence over Cristina to take control of the Institute from Cristina's mother. Cristina left the Institute to go to L.A. without telling either of them, refusing to take Diego's calls. During the Institute's investigation into the murders, Diego arrived in L.A. to investigate for the Centurions. He explains to Cristina that he and Jaime were not plotting against her together, just Jaime, and Diego was going to try to convince her not to become is parabatai. Diego insists that he loves her and that he came to L.A. in part to make sure she was okay. Diego helps the rest of the Institute to investigate the murders, arguing in the Blackthorns favor when the investigation is done so they are not punished. 

Youngest daughter of Andrew and Eleanor Blackthorn. Half-sister of Helen and Mark, her father's children with the faerie Nerissa, and sister to, Julian, Livvy, Ty, and Tavvy Blackthorn. Niece of Arthur Blackthorn, living at the L.A. Institute.

She is too young to go on many of the missions but is still involved in training and lessons by Diana. She does come with her siblings to confront Malcolm after Malcolm kidnaps Tavvy.

Wife of Arthur Blackthorn. Mother of Julian, Livvy, Ty, Dru, and Tavvy Blackthorn. Stepmother of Helen and Mark Blackthorn, who she accepted as her own children. Died of bone cancer shortly after Tavvy was born.

Deceased

Parabatai to Silas Pangborn. Silas fell in love with his parabatai and killed himself before he was discovered and the two were exiled as punishment. Lived around the 1850s.

Deceased

Daughter of the late John Carstairs and his wife. Carries the sword Cortana. Best friend and parabatai of Julian Blackthorn, who she is in love with. Lives at the Los Angeles Institute. Said to be the best Shadowhunter of her generation. Fake dating Mark. 

Emma's parents went out to investigate a demon attack the day that Sebastian attacked the Los Angeles Institute, and left Emma was at the Institute. Her parents were murdered the same day. The Clave has always attributed their death to Sebastian, but Emma does not believe that's true and has quietly investigated on her own since they died. She is given a tip by Johnny Rook that murders happening to faeries in Los Angeles match the description of her parents' murders, she investigates without the Clave's permission. Mark accidentally tells Cristina about faerie secrets, leading to a jealous Kieran tattling and Mark receiving a punishment of twenty lashes. Julian takes the punishment for him, but then Emma takes the majority of the punishment for Julian. It could have killed her but it does not. During the investigation, Julian is shot by a poisoned crossbow bolt and nearly dies, but Emma is able to draw an iratze that glows a little bit and feels painful when it's applied and saves his life. After finding the Followers and Casper Sterling, Emma and the others discover that Malcolm is the one behind the murders (he's been working with the Unseelie faerie Iarlath). When they confront him, Malcolm reveals that it is because Emma is in love with Julian that the parabatai bond made a more powerful rune and saved his life. Jem later unknowingly confirms this, telling Emma that when parabatai fall in love, they start to develop magical powers that made them go mad. They eventually kill their loved ones before dying themselves. Emma forces herself to end things with Julian, pretending to date Mark to drive Julian away. Emma kills Malcolm in the convergence by letting him get swept into the ocean and eaten by sea demons. He had the Black Volume of the Dead when he went into the water. After Malcolm dies, the protections he placed on Johnny Rook's home dissolved. Johnny is killed by Mantid demons but Emma is able to get to the house in time to save Kit. Jem and Tessa reveal that Kit is not really Kit Rook, but Christopher Herondale. 

Leader of the Wild Hunt, known as The Gatherer of the Dead. If his cloak is stolen, he loses his control of the Wild Hunt to whomever holds the cloak. Has one pale blue iris and one black iris.

He allows Mark to be returned to his family on the condition that the Shadowhunters investigate who is killing Fair Folk in Los Angeles and turning the killer in to be punished by the faeries. When Mark accidentally reveals some of the faeries' secrets, Gwyn accompanies Iarlath and Kieran to see Mark punished. Gwyn is there when Julian takes Mark's place under the whip, and then when Emma takes Julian's place.

Eldest child of Andrew Blackthorn, who led the Los Angeles Institute, and a faerie woman named Nerissa. Has a brother Mark who is also half-faerie, as well as five younger siblings from Andrew and his late wife Eleanor, Julian, Livvy, Ty, Dru, and Tavvy. Married to Aline Penhallow. Together, they 'study the wards' at Wrangel Island - a barely veiled punishment of Helen's after the Dark War for being half-faerie. Both Jia Penhallow (Consul and Aline's mother) and Robert Lightwood (Inquisitor) insist it is also for Helen's protection. She gets to speak to her siblings once a week via video call but she is not allowed to visit the Institute, nor are they allowed to see her on Wrangel Island. They have not seen Helen since her wedding to Aline. 

Unseelie faerie who was conducting his own investigation into the Los Angeles murders. He was part of the convoy that brought Mark to the Institute and later, gave the lashes as Mark's punishment. It is discovered that Iarlath was working with Malcolm, giving Malcolm a list of his enemies to kill as Malcolm needed to collect victims for his Hands of Glory. 

Sister to Alec and the late Max Lightwood. Only daughter of Robert and Maryse Lightwood. Foster sister of Jace. Wears a ruby necklace. Engaged to Simon Lovelace. Hero of the Dark War.

Son of Stephen and Celine Herondale. Foster brother to Alec, Isabelle, and the late Max Lightwood. Parabatai to Alec. Dating Clary. Hero of the Mortal War and the Dark War. Head of the New York Institute with Clary Fairchild. 

Has a soft spot for Mark Blackthorn, who he saw during the Dark War just after Mark was taken by the Wild Hunt. He gave Mark a witchlight and encouraged him to stay strong. He was at Isabelle and Simon's engagement party when Magnus was informed of necromantic activity in Los Angeles. He, Clary, Magnus, Alec, and Robert left the party and learned the truth about Malcolm and how the L.A. Institute investigated for the faeries to have Mark returned to them. Both he and Clary argue in favor of the Blackthorns receiving no penalty.

Member of the conclave in Mexico City. Diego's younger brother. Was Cristina's best friend and scheduled to become her parabatai when Cristina overheard him talking about how he and Diego could use their influence over Cristina to take control of the Institute from Cristina's mother and have their famiy lead the Institute instead. Cristina left for Los Angeles the next day and has not heard from Jaime since. 

Married to Tessa Gray. Jem used to be a Silent Brother named Brother Zachariah. Now that he is no longer a Silent Brother, he and Tessa have married but they do not live within the Clave. Instead, they have been searching for a line of the Herondale family that many believe was ended. They find who they were looking for and tell Kit Rook that his father was a descendant of Tobias Herondale named Jonathan Herondale, though he went by Johnny Rook to stay off the radar, and that Kit's birth name is Christopher Rook.

Emma Carstairs' father. Murdered with his wife the same day that Sebastian attacked the Los Angeles Institute, but Emma does not believe that he was killed by Sebastian - who would have preferred to make him Endarkened. Throughout the investigation into the thirteen murders, Emma discovers that her parents returned to the Institute after Sebastian's attack to find Malcolm in the library looking for the Black Volume of the Dead. Malcolm killed them and used them as an experiment to try to bring Annabel back to life. He was unsuccessful. 

Deceased

Mundane with the sight who has a booth at the Shadow Market. Father to Kit. 

He knows everyone's secrets and is often a good source of information. Emma is told about the murders and tipped off about where the next body will be dropped by Rook - instigating her investigation into the thirteen murders. Eventually they find out that Rook had been hired to tell Emma that information and to create a poison for the Guardian, though he does not know who the Guardian is. After Malcolm is found out and killed, the protections the Guardian placed on Rook's house disappear. Johnny and Kit are attacked by Mantid demons. Emma is able to save Kit with the help of Jem and Tessa, but Johnny is killed by the demons. Jem and Tessa explain that Johnny was actually a Shadowhunter from a line they believed had died out, named Jonathan Herondale, and Kit's birth name is Christopher Herondale. They take Kit to the Los Angeles Institute where he will be safe from his father's enemies. 

Deceased

Eldest son of Andrew Blackthorn, the leader of the Los Angeles Institute, with his late wife Eleanor, though he had two older half-faerie children, Helen and Mark, whose mother was the faerie Nerissa. He has four younger siblings, Livvy, Ty, Dru, and Tavvy. Best friend and parabatai of Emma Carstairs. In love with Emma. 

Their father Andrew was turned Endarkened during the Dark War when Julian was twelve years old. When their Endarkened father breaches the Gard, Julian killed him to protect his siblings. He asks Emma to become his parabatai so they would not be separated when the Blackthorns return to Los Angeles, since Jia wanted Emma to attend Shadowhunter Academy. He speaks to Helen on Wrangel Island by video call once a week and has never given up on seeing his brother Mark again. After their uncle Arthur became head of the Institute, Julian quickly realized that Arthur was incapable of doing the job. In an effort to keep what remained of his family together, he began running the Institute and raising his siblings himself in secret. He has asked their tutor, Diana, who suspects the truth of who is in charge of the Insitute, to take over but she has told him no with no  explanation. Julian is very good at strategizing and thinks several steps ahead of other people. He is fully committed to helping Emma solve her parents' murders. When the faerie convoy comes to the Institute with Mark, Julian and Emma lead the investigation into who is behind the murders, though Julian is often upset with Emma for rushing ahead and leaving him behind. While investigating, he is shot with a poisoned crossbow bolt and nearly dies. It is only Emma's iratze, made stronger by their forgbidden parabatai love, that saved his life. Only Emma knows this, she has not told Julian. They have begun to be able to hear the other's intentions in their heads as well. After solving the murders and discovering that parabatai that fall in love ineveitably go mad and kill those closest to them before dying themselves, Emma decides that she must drive Julian away and make him not love her anymore. She starts pretend dating his brother Mark instead. 

Prince of the Unseelie Court. One of the Unseelie King's fifty or so sons, who he gave to the Wild Hunt. His mother was some sort of water faerie. His hair is fluctuating shades of blue and he has one silver iris and one black iris. Rides Windspear. Mark's ex-lover.

Kieran was ostracized by the other faeries of the Wild Hunt for his parentage. He and Mark came to rely on each other and to love one another, being the only refuge or safe place for the other in the Wild Hunt. He made a valuable and rare faerie token called an elf-bolt for Mark. He came with Mark when Mark was taken to the L.A. Insittute and was allowed to help the Shadowhunters in their investigation. He spent much of his time watching Mark and getting jealous of Mark's relationship with Cristina. When he eavesdropped on Mark and Cristina one day, he overheard Mark telling Cristina a secret of faerie. Kieran tattled, believing that Mark would be forced to return to the Hunt. He was appalled when Mark was given twenty lashes instead. Knowing that Mark would not survive twenty lashes, Julian took the punishment, and then Emma took the majority of the punishment when Julian fell unconscious. Mark told Kieran that their relationship was over and he would never forgive Kieran for the injury that he had caused Julian and Emma. 

Son of Johnny Rook. Mundane with the sight. 

Works with Johnny at the Shadow Market and is well acquainted with the darker aspects of the Downworld, and humanity in general. Johnny has raised Kit to hate and fear the Shadowhunters, telling him that the Shadowhunters will kidnap him and force him to drink from the Mortal Cup. At one point when Julian and Emma question Johnny about the Guardian, Ty sneaks into the basement and holds Kit at knife point out of an abundance of caution (he didn't want Emma or Julian to be blindsided by a second person). When the Guardian is killed, the protections he placed on Johnny's home disappear and they are attacked by Mantid demons. Johnny is killed, but Kit is able to text Emma, who comes to rescue him with Tessa and Jem. Afterward, Tessa explains that Kit is descended from a line of Shadowhunters that most believe is now ended. Tobias Herondale deserted and was sentenced to death for it. When he couldn't be found, his pregnant wife was punished instead. Catarina Loss was able to deliver the baby and escape from Europe with him, hiding in the New World. Johnny and Kit descend from that child. Johnny knew and was hiding himself and his son from the Shadowhunters but now, an Institute may be the only place that Kit can expect a modicum of safety from Johnny's enemies. Kit is having trouble coming to terms with this new information and locks himself inside his room. Ty sits outside of it and patiently waits for Kit to come out.

Eldest daughter of Andrew Blackthorn, leader of the Los Angeles Institute, and his late wife Eleanor, though he had two older half-faerie children, Helen and Mark, with the faerie Nerissa. Twin sister to Ty. Has three older siblings, Helen, Mark, and Julian, and two younger siblings, Dru and Tavvy. 

Ty and Livvy help Julian and Emma with the investigation primarily by researching on Ty's iliicit computer. They are able to find Stanley Wells' home after he is identified, research the other murder victims, and translate parts of the spell. Livvy really wants Ty to agree to become her parabatai, but he steadfastly refuses. He wants to go to the Scholomance, and they will not accept anyone who has a parabatai. When Tavvy is taken, Livvy fights at the convergence to save him. 

High Warlock of Brooklyn. Demon Mark: Cat eyes. Boyfriend of Alec Lightwood. Adopted father of Max. Warlock representative to the Council. Friend of Malcolm Fade. 

Ever since the Dark War, Magnus has a map that alerts him to any necromantic activity - which he then investigates. He is alerted to necromantic activity in L.A. and is at Malcolm's home when Julian and Emma come to ask Malcolm to help with the Faerie translantion. Malcolm insists that the necromantic activity was a small time warlock that Diana has already dealt with. He mentions that Malcolm had issues with ley lines while he was living in Cornwall, but Malcolm refuses to discuss it and escorts Magnus out. On the way, Magnus tells Emma that ley lines are strongest where they meet, called a convergence. Later, when Malcolm raises the Followers to fight the Shadowhunters that have come to save Tavvy, Magnus is alerted to the activity. He leaves Isabelle and Simon's engagement party with Jace, Clary, Alec, and Robert. They are at the Institute when Julian and the others arrive after confronting and killng Malcolm. Magnus is upset to learn that Malcolm died believing his friends betrayed him by keeping the secret of Annabel from him. 

High Warlock of Los Angeles. Demon mark: purple eyes. Known for being very eccentric. Friend of Malcolm and Catarina. 

Malcolm is one of the only people to know about Arthur's infirmity. He helps Julian by creating a tonic that allows Arthur small periods of lucidity, although Arthur gets debilitating headaches afterward. He helps the Shadowhunters with the investigation into the murders, but they later learn that he has done nothing but lead them astray. In fact, Malcolm is the Guardian behind the murders and the person who killed Emma's parents. When he was young, he fell in love with Annabel Blackthorn. It was illegal for them to be together and her family absolutely did not approve. Malcolm was told that Annabel had been sent to the Iron Citadel. He later learned that she was actually murdered by her family. He went to the Unseelie King and asked if there was a way to bring her back and was given a poem of instructions. He was also told to steal the Black Volume of the Dead. After Sebastian's attack on the L.A. Institute during the Dark War, Malcolm went to the Institute's library to find the book and was discovered by Emma's parents. He killed them and tried to use them to bring Annabel back but was unsuccessful. After successfully translating the poem, he realizes that he must have thirteen hands that have committed murder. He creates the Followers, a group that follows the Guardian. They have a lottery, during which one person is chosen to commit a murder. After they give their hand to the Guardian, they receive their heart's desire and the power of all the Followers increases. After the thirteen are collected, he must use the blood of a Blackthorn to bring Annabel back. He chooses Tavvy, kidnapping the boy and preparing to sacrifice him. However, the Blackthorns and their friends mount a rescue, saving Tavvy. Emma forces Malcolm through the porthole in the convergence, plunging him deep into the ocean where she sees him get grabbed by a sea demon. He was holding the Black Volume of the Dead when he went into the water. He was unsuccessful in raising Annabel. 

Deceased

Great-aunt of the Blackthorn children who lives in England. The kids visit her for two months before returning to the Institute. Marjorie gives Tavvy a book on Shadowhunter children's tales. 

Eldest son of Andrew Blackthorn, leader of the Los Angeles Institute. His mother is the Faerie Princess Nerissa. He has one older sister, Helen, and five younger half-siblings from Andrew and his late wife Eleanor. Ex-lover of Kieran, has a crush on Cristina, fake dating Emma. 

Mark and Helen were brought to the Institute when his mother died and his father's wife raised him as her own son until she died. When the Los Angeles Institute was attacked, Mark went to defend the Institute but unlike his father, he was not Turned because he was half-faerie. Instead, he was given to the Wild Hunt. He saw Jace, Clary, and their friends before they went to Edom and they convinced him to stay strong and keep fighting. Jace gave him a witchlight. After the Dark War ended, many Shadowhunters wanted both Mark and Helen stripped of their Marks because they were half-faerie. As a compromise, they decided to send Helen to Wrangel Island and to not negotiate Mark's release from the Wild Hunt. The Shadowhunters are not supposed to have any dealings with faeries from any Court, so Julian and Emma are surprised when a Faerie convoy appears at the L.A. Institute. The convoy brings Mark to the Institute. The faeries want the Institute to investigate murders of the Fair Folk in the L.A. area and have brought Mark as a bargaining chip. If the murderer is found and turned over to the faeries, then Mark can decide whether to stay with his family or return to the Hunt. The Shadowhunters decide to investigate without the Clave's knowledge. Mark has a very hard time acclimating to life outside the Hunt. He was treated poorly by the faeries, berated and tortured, they gave him hallucinations of his family dying. At first, he believes this is just another hallucination but Cristina helps him to find his way back to his siblings. He helps in the investigation but refuses any Marks. He begins to feel something for Cristina, but is torn between her and his love for Kieran, another member of the Wild Hunt and the only reason he would have to return. When Kieran spies on Mark and hears Mark accidentally reveal a faerie secret to Cristina, Kieran tattles. He believes that Mark will be forced to return to the Hunt, but is appalled to learn that Mark is to receive twenty lashes instead. Julian, knowing that twenty lashes would kill Mark, volunteers to take the punishment much to Mark's dismay. After three lashes, Emma knocks Julian unconscious and takes the lashes instead. It nearly kills her and Mark breaks up with Kieran. He tells Kieran that he will never forgive him. However, Kieran reappears when Tavvy is taken by Malcolm, flying Windspear to the convergence with Mark to clear the demons before the others arrive. He fights with the Shadowhunters to save Tavvy and they are ultimately successful. Mark still does not forgive Kieran, but he does recognize that his help was instrumental in saving Tavvy. If Kieran needs help, he may call on Mark and Mark will come. By this time, Cristina has gotten back together with Diego and Mark is unexpectedly upset about it. Emma asks Mark to fake date her, to drive Julian away from her, only telling Mark that it may save Julian's life. Mark agrees. 

Demon Mark: blue skin. Magnus and Alec's adopted son. 

Seelie Princess who fell in love with Andrew Blackthorn while he was held in Faerie. They had two children together, Mark and Helen. When Nerissa, Helen and Mark were taken to the Institute for their father and his wife, Eleanor, to raise. 

Deceased

Inquisitor of the Clave. Husband of Maryse Lightwood (for now). Father to Alec, Isabelle, and the late Max Lightwood, foster mother of Jace. 

He leaves his daughter's engagement party when Magnus detects necromantic activity in Los Angeles. Robert demands a report from Diego, and he is filled in on the investigation intot the L.A. murders and Malcolm's death. Anything Diego cannot explain, Julian fills in for Robert. Robert wants to know why Arthur was not more included in the investigation and is told that Arthur was investigating Anselm Nightshade at the same time. Nightshade is arrested and Robert is convinced to argue in favor of the Blackthorns. Since they did not break any Laws by looking for Mark when they were explicitly told not to, Mark is allowed to stay with them. 

Parabatai to Eloisa Ravenscar. Silas fell in love with his parabatai and killed himself before he was discovered and the two were exiled as punishment. Lived around the 1850s.

Deceased

Born Simon Lewis. After the Dark War, SImon went to Shadowhunter Academy and Ascended, taking the name of Simon Lovelance. Clary's best friend and parabatai. Son of Elaine and brother of Rebecca. Engaged to Isabelle Lightwood. Hero of the Dark War. 

Youngest child of Andrew Blackthorn, leader of the Los Angeles Institute, and his late wife Eleanor. Has two older half-faerie siblings from Andrew Blackthorn and the faerie woman Nerissa, Helen and Mark, and four older siblings from Andrew and Eleanor, Julian, Livvy, Ty and Dru.

The youngest of the Blackthorns, Tavvy is only eight years old and has only just started training. He is kidnapped by Malcolm Blackthorn and taken to the convergence, where Malcolm intends to kill him and use his blood to resurrect Annabel Blackthorn. Tavvy's siblings and loved ones come to his rescue, saving Tavvy before he is seriously hurt and killing Malcolm.

Warlock married to Jem Carstairs. She and Jem work outside of the Clave and have taken up the dangerous mission of finding the Lost Herondale. They are able to track Johnny and Kit Rook, really Johnny and Kit Herondale, to their home just as Johnny is attacked and killed by demons. They are able to save Kit. Tessa and Jem explain that Kit will be safest inside the Los Angeles Institute, they have to find the Black Volume of the Dead and optimistically Malcolm's body as well. 

Herondale who deserted and was sentenced to death for it. He disappeared and did not face his punishment. Instead, the Clave killed his pregnant wife. They believed that the baby died with her, but Catarina Loss was able to save the baby and whisk it away from Europe to America. It is from this child that Johnny and Kit Herondale descended. 

Deceased

Middle son of Andrew Blackthorn, leader of the New York Institute, and his late wife Eleanor. Has two older half-faerie siblings from Andrew and the faerie Nerissa, Helen and Mark; an older brother Julian; twin sister Livvy; and two younger siblings, Dru and Tavvy. Has a hard time communicating with people and can get overstimulated easily. 

Livvy wants to bond with Ty as parabatai, but he refuses because he wants to join the Scholomance when he's old enough - and they do not accept anyone with a parabatai. Ty and Livvy help Julian and Emma with the investigation primarily by researching on Ty's iliicit computer. They are able to find Stanley Wells' home after he is identified, research the other murder victims, and translate parts of the spell. Ty follows Julian and Emma when they go to question Johnny Rook, breaking into Johnny's basement and holding Kit Rook hostage until Julian convinces Ty to let Kit go and Johnny gives them what they need just so the Shadowhunters will leave. When Tavvy is taken, Ty fights at the convergence to save him. 

Witch that Kit knows from the Shadow Market. Casper Sterling arranges a meeting with her after he is chosen in the Lottery. He kills Wren and her body is taken to the convergence. She is the thirteenth victim, and the last victim before a Blackthorn is killed.

Deceased

Underground headquarters of the warlocks of the world. Holds an expansive knowledge of arcane information.

A group of faeries not tied to either the Seelie or the Unseelie Court. They fly across the sky, gaining new members from those killed in battle. 

Notable Members: 

• Gwyn ap Nudd - leader

• Kieran Hunter

• Mark Blackthorn - formerly

Shadowhunters who drank from the Infernal Cup, either willingly or forced, who became a dark version of a Shadowhunter. Stronger and faster even than a common Shadowhunter. They all died when the Infernal Cup was destroyed. 

Weapons experts. Makers of seraph blades and Shadowhunter weapons, and those that mold adamas into steles, demon towers, and witchlights. They are the only Shadowhunters that know how to work the adamas into what is needed. The live in the Adamant Citadel. They bear orange decorative tattoos around their eyes and over their temples like a mask. There are makers, who shape the adamas for other sisters to carve. 

Archivists and librarians who use some of the most powerful runes ever made - warping their bodies and making them into some of the strongest, most feared demon hunters. They live in the Silent City and do not speak at all, communicating telepathically. Most have no longer have eyes and their mouths are sewn shut.

While a single Mark on a mundane can kill them, putting several powerful Marks on them will create a Forsaken - a monster that is very powerful and entirely loyal to the person who created them. 

Cat that lives with Jem but delivers small gifts like sea glass to Emma Carstairs. Emma has been told to send a message with Church if she needs to speak to Jem.

Kieran's horse in the Wild Hunt. He likes Mark.

Emma Carstairs was given Cortana to wield when her father died. 

"I am Cortana, of th same steel and temper as Joyeuse and Durendal."

Wayland the Smith, who made Excalibur, King Arthur's sword, and Joyeuse, Lancelot's sword, and Durendal, the hero Roland's sword made Cortana from the same steel as those swords. It has an a wing feather from the Angel in the hilt.

• The Mortal Cup - used to create more Shadowhunters. If a mundane wishes to Ascend, they may drink from the Mortal Cup. It may kill them but it may make them into a Shadowhunter. 

• The Soul-Sword - retrieved from Valentine and again kept in the Silent City under the protection of the Silent Brothers. Used to compel the Shadowhunter holding it to speak the truth. Named Maellartach. 

• The Mirror - Lake Lyn in Idris

The Book of Gramarye (The Gray Book) - a book containing all the runes given to the Shadowhunters by the angel Raziel

Idris - Country native to the Shadowhunters

Alicante - The only city in Idris, home to the Shadowhunter Clave and Council

The Gard - Where the Shadowhunter Council meets

Institutes - Satellite branches of Shadowhunters in large cities, headquarters to the local branch of Shadowhunters called a Conclave or Enclave depending on your nationality

Adamant Citadel - Fortress dwelling of the Iron Sisters. 

Wrangel Island - Largest collection of wards, powering the wards across the world

The Scholomance - Elite combat academy where students are taught to deal with demons and Downworlders. It was shut down as a show of goodwill between Shadowhunters and Downworlders but was reopened has the Cold Peace was instated. Graduates are called Centurions.

The Convergence - Where ley lines come together, a place where dark magic can be performed undetected. 

The Basilias - Shadowhunter hospital

Sepulchre Bar - Location of Stanley Wells' body, the first of the murder victims that the Institute finds.