The Shadowhunters' Wiki
The Shadowhunters' Wiki

Chain of Thorns is the upcoming third and final installment in The Last Hours trilogy by Cassandra Clare.



  • The book will take place about a week after the events of Chain of Iron.[2][3]
  • Some key word clues Cassie has given on the book are: "Paris, kidnapping, Cornwall, a party where a terrible thing happens, death, inventions, science, secrets revealed, a new Shadowhunter arrives in London."[4]
  • The book will open with Matthew and Cordelia in Paris.[5]
  • The reason why Lucie flinched while practicing her and Cordelia's parabatai ritual will be revealed.[6]
  • There will be an unexpected romantic scene.[6]
  • Matthew wants to tell people his secret; especially his parents and James.[5]
  • Matthew will explain his personal financial situation.[7]
  • Ariadne will pick a new name for herself by the end of the book.[8]
  • We will see new places.[9][10]
  • There will be consequences for the way Lucie raised Jesse though it was not entirely necromancy.[11]
  • Blackthorn sword has a name that will be revealed.[12]


For more check either the series' teaser section or the unidentified snippets page.

Teaser #1


The word echoed in Cordelia’s ears. Though she had clambered blindly into a fiacre with Matthew, though they were rattling quickly through some part of Paris, she still felt as if she were standing in front of the cabaret, hearing the guard refuse her entrance. I know what I know. You cannot come inside.

Because you are corrupted within, said a small voice inside her. Because you belong to Lilith, Mother of Demons. Because of your own foolishness, you are cursed. No one should be around you.

“Daisy?” Matthew’s worried voice seemed to come from far away. “Daisy, please. Talk to me.”

Teaser #2

“Regardless,” said Matthew, “I’m glad to hear that you’ve returned to your usual busy schedule of ruining London’s women for London’s men. Before I left for Paris the buzz was that you had gone entirely out of circulation.”

“Oh really?” said Anna.

“It was all anyone seemed to want to talk about at the Ruelle,” Matthew pressed. “Mundane, Downworlders, all the ladies remaining completely unseduced, and not happy about it.”

“I can hardly seduce everyone,” Anna shrugged. “Some of them will just have to seduce one another.”

Now it was Matthew’s turn to raise an eyebrow. “I’m not worried about them,” he said. “I’m worried about you.” In a lower voice he said, “I heard about Ariadne.”

Teaser #3

James took a deep breath. “Daisy,” he said. “I wanted to say — I never apologized.”

She turned, laid the striped dress on the bed. Stayed there, fiddling with its buttons. “For what?”

Teaser #4

James wasn’t sure how he’d expected Lucie to respond to their arrival, but he was startled nonetheless at the fear that flashed across her face.

She took a step back, nearly knocking into the boy standing next to her — Jesse Blackthorn, it was Jesse Blackthorn — and flung her hands up, as if to ward them off. As if to ward off James, and her father.

Teaser #5

"Daisy." Matthew spoke in a low voice, his hand tightening on hers. "I know you are lost in thought. But -- listen."

There was urgency in his voice. Cordelia turned to look behind them, down the long tunnel of the quai -- the river on one side, the stone retaining wall rising on the other, the city above them as if they had retreated underground.

Shhhh. Not the wind in the bare boughs, but a hiss and a slither. A bitter smell, carried on the wind.


Teaser #6

Thomas nodded, not really paying attention. It wasn’t his fault, entirely. He knew that Christopher was simply working through his own thought processes aloud, and Thomas wasn’t really expected to follow along. More just produce the occasional encouraging “Oh, indeed.”

From upstairs, the doorbell chimed. Christopher, interrupted in the midst of explaining the science behind fire-messages, put down his stele, muttered about the interruption, and went upstairs to answer the door.

It wasn’t Thomas’s intention to eavesdrop. But when Christopher’s voice drifted down to him, and he heard, “Oh, hullo, Alastair, you must be here to see Charles. I think he’s upstairs in his study,” he found he could focus on nothing else.

Special content

  • Cassie plans on the special content for this book to be the story of the found family tree with explanations as to why it is incorrect and what the true family tree is.[13][14]


  • The book was initially intended to release in March 2022 like its predecessors[15] but was pushed back several months to November as a result of Covid-19 delays.[16][1]


  1. 1.0 1.1 Cassandra Clare's July 2021 newsletter
  2. "Around a week [will pass between CoI and CoT]." Cassandra Clare on Tumblr
  3. "A short amount of time has passed — no more than a week." CC on Tumblr
  4. Summary of Cassandra Clare's UK tour date for Chain of Iron
  5. 5.0 5.1 TMI Source live recap
  6. 6.0 6.1 TMI Source's 10 year anniversary chat with Cassandra Clare
  7. "[Matthew] does have plenty of money from Charlotte and Henry, which has been paid to him in the form of an allowance for years" & "he has some extra money that was willed to him by grandparents." Cassandra Clare on Tumblr
  8. "Ariadne decides for herself what she wants to be called, and it is neither Ariadne nor Kamala." Cassandra Clare on Tumblr
  9. "Yes, we will see new places, like Paris." CC on Tumblr
  10. "Chain of Thorns is a long book, and the characters go to many places." CC on Tumblr
  11. "We’ll have to wait to see what the consequences of that are." CC on Tumblr
  12. Cassandra Clare on Instagram Live
  13. "I decided [the extra for Chain of Thorns is] going to be the story of the family tree, what it actually is and why there was a messed-up version of it." Cassandra Clare on Tumblr
  14. "There is an explanation of why the family tree ended up the way it did; that’s special content in the first edition of Chain of Thorns. But a new family tree is not." CC on Tumblr
  15. "CoT in 2022. All March." CC on Tumblr
  16. "It's likely that because of delays in the publication process due to COVID, the last TLH book and Sword Catcher will publish later than originally anticipated." Cassandra Clare on Tumblr
Cassandra Clare's Shadowhunter Chronicles
The Mortal Instruments
City of Bones City of Ashes City of Glass
City of Fallen Angels City of Lost Souls City of Heavenly Fire
The Infernal Devices The Dark Artifices
Clockwork Angel Lady Midnight
Clockwork Prince Lord of Shadows
Clockwork Princess Queen of Air and Darkness
The Last Hours The Eldest Curses
Chain of Gold The Red Scrolls of Magic
Chain of Iron The Lost Book of the White
Chain of Thorns The Black Volume of the Dead
The Bane Chronicles
What Really Happened in Peru Saving Raphael Santiago
The Runaway Queen The Fall of the Hotel Dumort
Vampires, Scones, and Edmund Herondale What to Buy the Shadowhunter...
The Midnight Heir The Last Stand of the New York Institute
The Rise of the Hotel Dumort The Course of True Love (And First Dates)
The Voicemail of Magnus Bane
Tales from the Shadowhunter Academy
Welcome to Shadowhunter Academy Pale Kings and Princes
The Lost Herondale Bitter of Tongue
The Whitechapel Fiend The Fiery Trial
Nothing but Shadows Born to Endless Night
The Evil We Love Angels Twice Descending
Ghosts of the Shadow Market
Cast Long Shadows Son of the Dawn
Every Exquisite Thing The Land I Lost
Learn About Loss Through Blood, Through Fire
A Deeper Love The Lost World
The Wicked Ones Forever Fallen
The Wicked Powers
Companion books
The Shadowhunter's Codex
An Illustrated History of Notable Shadowhunters & Denizens of Downworld
A Long Conversation
The Official Mortal Instruments Coloring Book
All the Stories are True: Classics Reimagined in the World of the Shadowhunters
Secrets of Blackthorn Hall
City of Bones: The Graphic Novel
The Mortal Instruments graphic novels
The Infernal Devices: Manga Series
The Mortal Instruments: City of Bones
Shadowhunters: The Mortal Instruments