Seven Deadly Thorns Summary: A Cursed Kiss Awaits
TL;DR: The Seven-Day Countdown
A rose tattoo on a prince’s forearm carries seven thorns. Each day, one vanishes, and when the last is gone, someone dies.
That is the clock ticking beneath Seven Deadly Thorns by Amber Hamilton, a young adult dark fantasy set in a kingdom sealed behind stone walls while a poisonous fog devours everything outside them.
At its center stand Viola Sinclair, an eighteen-year-old prefect hiding forbidden shadow magic, and Prince Roze Roquelart, the crown prince who also serves as the queen’s assassin.
A fake engagement, a murder investigation, and a magical countdown bind them together across seven parts.
- Premise: Viola Sinclair punches Crown Prince Roze and lands on death row. Roze, secretly the queen’s assassin, is bound by a rose tattoo that gives him seven days to kill her or die himself.
- The bargain: They stage a public engagement so the queen cannot quietly execute Viola, while Viola investigates the late king’s death using her skills as a linguist.
- The world: Aragoa survives behind stone walls while the Mists, a lethal fog unleashed during the Aragoan-Castellian War, chokes the land outside. Magic is a capital crime.
- The ticking clock: Each day, one thorn disappears from Roze’s arm. Chapters divide into seven parts, one per thorn.
- Core themes: Light versus dark magic, hidden identity, class inequality, and the cost of secrecy.
- Ending: Viola and Roze cross into Castelle, the Kingdom of Death, where Roze’s poisonous touch no longer harms her.
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Book Snapshot
- Genre & Subgenre: Young Adult Dark Fantasy / Romantasy (Gothic romantic fantasy)
- Core Narrative Tropes: Fake engagement, enemies to lovers, hidden heir, magical tattoo countdown, secret society, morally gray royalty, lethal touch curse
- Tone & Atmosphere: Gothic, claustrophobic, lyrical, tense, atmospheric, romantic
- Primary Conflict: Viola and Roze must identify King Alexandre’s killer and break Queen Maria’s hold within seven days, before the thorn tattoo forces Roze to execute Viola or die.
- Pacing Style: Fast-paced, structured around a seven-day countdown, with twists, gothic horror beats, and political intrigue
- Book Structure: Pronunciation guide, prologue, 39 chapters across 7 parts, epilogue, acknowledgments
- ISBN: 978-1547619108 (ISBN-10: 1547619104)
- Pages: 384
- Publisher: Bloomsbury YA, November 4, 2025
- Reading Age / Grade Level: 16–18 years / grades 7–9
- Author Background: Amber Hamilton writes young adult dark fantasy and romantasy. Seven Deadly Thorns is published by Bloomsbury YA.
Seven Deadly Thorns Summary: The Full Story
Spoilers ahead. This section covers the complete plot, including the ending.
The Kingdom of Aragoa sits on the Hivernian Peninsula, its people caged behind the stone walls of the castle and Vandenberghe Academy.
Nearly twenty years earlier, the enemy Kingdom of Castelle unleashed the Mists during the Aragoan-Castellian War, a poisonous fog that kills animal, plant, and human life.
Inside the walls, Roquelart nobility live in luxury while commoners starve in the mountain Caverns. Magic, called meiga, is punishable by hanging or drowning in the Mists. Viola Sinclair hides her shadow magic while serving as a prefect and translator.
Viola punches Prince Roze Roquelart after he harasses a freshman and whispers that he knows she is a meiga.
Professor Borges then gives her a black leather book stamped with the crests of Aragoa and Castelle, and moments later the Captain of the Royal Guard arrests her for treason.
In the cathedral, Roze arrives as the Huntsman, the queen’s assassin. He kills the Captain to save Viola and shows her a magical rose tattoo with seven thorns on his forearm.
Queen Maria gave him seven days to execute Viola or forfeit his own life. To escape his mother’s control and learn how King Alexandre truly died, Roze proposes a fake engagement that shields Viola from secret execution.
The engagement spreads quickly. Viola loses the trust of her best friend Cerise and faces hostility from commoner students, while Roze’s noble friends Ed and Fletcher accept the story without question.
Roze brings Viola into the royal residences, showing her a magic mirror that reflects only blackness and a hidden hall of banished books. At dinner with Queen Maria and Roze’s six sisters, the queen torments Viola and demands a public betrothal fete.
Queen Maria agrees to consider lifting the thorn tattoo if they find the king’s murderer, on the condition that Viola permanently marries Roze. The six sisters — Belladonna, Wisteria, Azalea, Oleandra, Narcissa, and Hemlock — watch the exchange closely.
Viola joins the Grimmstone Society, an ancient student order guarding forbidden histories in a subterranean library called the Crypt. She takes the code name Scrivener, while Roze operates as Reaper.
At the betrothal ball, the undead Captain of the Guard appears in the crowd, resurrected by the queen. Queen Maria then dies abruptly, and Princess Belladonna takes the throne and places the kingdom on lockdown.
Roze confesses his deepest secret to Viola: he is an incarnation of Queen Maria’s grief and hatred, created through dark magic, and his bare skin carries a lethal poison. He killed the queen to stop her from forcing him to execute Viola, yet the thorns remain on his arm.
Viola sneaks into the Caverns to find Professor Borges and encounters her former friend Kole Belcamp. When Kole learns she is a meiga, he recoils and threatens to report her.
Her shadows erupt uncontrollably and Kole dies. Later, in Roze’s tower, Viola is poisoned by tea served by Queen Maria, who is possessing Professor Borges; Cerise administers an antidote in time.
With one thorn left, Viola pricks her finger and drips blood onto the Book of Castelle. The book writes back. Through it, King LeĂłn of Castelle reveals that Viola is his biological daughter, sent to Aragoa as an infant during the war.
LeĂłn also reveals that he and King Alexandre were secret lovers who planned to unite their kingdoms in peace. Queen Maria’s jealousy destroyed that plan, and she unleashed the Mists herself. He tells Viola that the queen’s power is anchored to her magic mirror and advises her to be dangerous.
Viola, Cerise, and Professor Borges enter the castle, and Viola drives a silver stake into the mirror. She then reaches Moody Hall, where Queen Maria’s spirit has turned the auditorium into a briar garden of black-red roses, trapping the Grimmstones and possessing the royal sisters.
Viola publicly confesses her lineage and admits she accidentally killed King Alexandre on All Hallows Eve, when his frantic grip triggered her shadow magic in self-defense. Roze defends her, declaring his love for her dark nature.
Queen Maria’s spirit becomes a gargantuan spider beast. Viola shatters the outer wall with her shadows, letting the Mists flood the hall; the fog dissolves the beast and destroys the queen’s magic.
Roze prepares to die in the Mists to eradicate his mother’s remaining power inside him. Viola refuses to leave, closes the doors, and asks him to kiss her. Their embrace fuses his poisonous touch, her shadow magic, and the Mists.
Viola and Roze wake unharmed in a sunlit meadow of blooming flowers and ancient oaks, having crossed into Castelle, the Kingdom of Death. Roze touches Viola’s cheek with a bare hand and finds his poison cured and death unable to hold them.
By destroying Queen Maria’s hold, light and dark magic have balanced across Hivernia, healing both Aragoa and Castelle. In the distance, they see the dark spires of the Castellian royal castle, and Roze welcomes Princess Viola to her true home.
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Summary by Chapter
Spoilers below. This section offers a brief look at each of the book’s 39 chapters, organized across seven parts titled “The First Deadly Thorn” through “The Seventh Deadly Thorn,” plus a prologue and epilogue.
Chapter 1: At Vandenberghe Academy, prefect Viola Sinclair suppresses her forbidden shadow magic while Prince Roze bullies a freshman in the Commons.
Roze eats a rare apple from the royal courtyard and mocks Viola’s composure. He steps close and whispers that he knows she is a witch, and Viola punches him in the face.
Chapter 2: Roze falls with a bloody nose while Viola’s gargoyle, Saint Waffles, attacks his pant leg. Cerise and Kole intervene, and Kole regretfully decides he must report the assault to the dean.
Viola tells Cerise she fears Roze saw her shadows and will report her to the queen’s purge, then is summoned to Professor Borges’s office.
Chapter 3: Viola discusses her translations of ancient Hivernian runes with Professor Borges, who gives her a black leather-bound book marked with Aragoan and Castellian seals. The Captain of the Royal Guard storms in and arrests Viola for treason.
As she is dragged away, Borges slips the book into her pocket and whispers advice to submit to the Crown.
Chapter 4: The Captain drags Viola across the glass bridge over the corpse-filled lake and into the cathedral to await execution, where she hides beneath the altar cloth. Roze enters as the Huntsman and confronts the Captain about the dropped book.
When the Captain finds Viola, Roze slits his throat, and the body collapses in front of her.
Chapter 5: Roze reveals he is the queen’s assassin of meigas and shows Viola the rose tattoo with seven thorns, explaining he has seven days to execute her before his own life ends. He proposes a bargain: Viola investigates King Alexandre’s death while he protects her.
To prevent a quiet execution, they will publicly pretend to be engaged.
Chapter 6: On day two, Viola prepares to research the book’s runes in the academy library.
Roze gives her the Roquelart family crest ring, marking her as his intended bride, and takes her to breakfast with his noble friends Ed and Fletcher while lying about their long relationship. Viola notes Ed’s mention of a secret organization.
Chapter 7: News of the engagement spreads, and Cerise feels betrayed. Viola lies that she has secretly dated Roze for months, and in History class Sir Patrick Porcher lectures on the Aragoan-Castellian War and the Mists sent by Castelle’s meigas.
He notes that meigas who sided with Aragoa were later executed for treason.
Chapter 8: Viola and Roze research the war in the library before a planned dinner with his family. At lunch, commoner students mock Viola for courting a Roquelart, and Roze puts his arm around her.
Cerise confronts Viola over betraying commoners and threatens to end their friendship.
Chapter 9: Roze leads Viola into the restricted royal residences and Queen Maria’s private chambers, where a magic mirror reflects only blackness.
Viola’s shadows fail to answer his question about his father’s death. He then shows her the hall of banished books, and they study forbidden texts before dinner.
Chapter 10: Viola dines in a red dress with Roze, his six sisters, and Queen Maria, who torments her and announces a public betrothal fete. Princess Belladonna insults Viola’s common blood and pours wine on her, prompting Roze to pull a knife on his sister.
The queen agrees to consider lifting the tattoo if they find the king’s murderer and Viola marries Roze.
Chapter 11: On day three, Viola finds a yearbook photo of King Alexandre marked with the phrase “Fiat tenebrae,” and Roze pins her against a wall and orders silence when confronted. Kole later challenges Roze in the dining hall and is threatened in return.
In the king’s quarters, Viola sees a fresh bloodstain and collapses with a vision of a ghost boy hissing “Bloody Annie.”
Chapter 12: Viola hides the vision and asks Ed about joining his secret group. He reveals it is the Grimmstone Society, an ancient order guarding forbidden knowledge and artifacts.
Viola convinces Ed to help her pledge, then picks the lock to Borges’s office and finds a silver stake carved with a Castellian dragon.
Chapter 13: Roze buys Viola a black gown with moody gems for the betrothal fete, and they enter the ball hand-in-hand to present a united front.
He guides her through the court, naming key figures and sharing gossip to sustain the act. Viola overhears nobles suggesting food rations are withheld to thin the commoner population.
Chapter 14: Belladonna corners Viola and probes her relationship with Roze, noting that he normally avoids touch. Ed interrupts and takes Viola dancing, where she spots the Captain of the Guard — the man Roze killed — standing alive in the crowd.
The undead Captain locks eyes with her, his throat wound still open.
Chapter 15: Roze pulls Viola into an alcove and they flee barefoot from the undead Captain. Cornered, Viola wraps her arms around Roze and releases her shadows into a protective cocoon.
When she touches his face to quiet him, she feels a strange sting, and screams from the entrance hall announce that Queen Maria is dead.
Chapter 16: Roze confesses he killed the queen because she planned to force him to execute Viola.
He removes his gloves and reveals he is an incarnation of Queen Maria’s hatred, created through dark magic, with a lethal poisonous touch. When he brushes his bare lips against Viola’s, her shadows surge and she nearly passes out.
Chapter 17: Viola offers the ring back, assuming the bargain is finished, but Roze shows that the thorns remain. They conclude the countdown is tied to something other than the queen’s life.
That night, Ed leads Viola through a secret passage to her Grimmstone initiation, where she completes a magical compass labyrinth in a glass-domed rotunda.
Chapter 18: Viola writes her deepest secret, “I am afraid of myself,” and Roze transforms the paper into a moth, then drives a needle through it into her chest to inscribe a death’s-head hawk moth tattoo.
She becomes Scrivener and Roze becomes Reaper. In the Crypt, Viola translates parchment linking King Alexandre, Castelle, and the Book of Odds.
Chapter 19: Cerise applies chemicals to the Book of Castelle, but the book absorbs each one and its ink becomes a writhing black serpent. Cerise throws a gas lamp at the multiplying snakes and sets the laboratory on fire.
Viola’s shadows smother the flames and destroy the serpents, and she surrenders fully to her magic for the first time.
Chapter 20: Roze reprimands Viola as another thorn disappears. Guards escort them to the throne room, where Belladonna sits in mourning robes with her five sisters and accuses Viola of being a meiga who murdered the queen.
Viola reveals that Queen Maria was herself a meiga, and Roze offers to continue as royal assassin in exchange for Viola’s clemency.
Chapter 21: In the royal crypt, Belladonna reveals the queen’s corpse as a pile of mutilated flesh with missing organs. The dead reanimate and attack, and the queen’s corpse pins Viola, pulling her into a dark vision.
There Viola sees the ghost of her brother, whom she accidentally killed in childhood, and the dead queen strangles him while calling her “Annie.”
Chapter 22: Viola wakes weeping and confesses to Roze that her middle name is Annette and that she accidentally killed her little brother with shadow magic, leading her surrogate parents to abandon her.
Roze reassures her that it was an accident and admits he wants to kiss her but refrains because his skin is poison. He explains the queen’s spirit is still active and the kingdom is on lockdown.
Chapter 23: Grimmstone members guide Roze and Viola through secret passages and an endless spiral staircase to a hidden octagonal tower room with a fireplace, piano, and bookshelves.
Roze plays a haunting melody with his bare fingers. Viola realizes her feelings for him have moved beyond hatred into love.
Chapter 24: Roze leaves to gather research and find Professor Borges, ordering Viola to stay hidden. She finds his poetry book marked with her lost silk ribbon and leaves the tower for the Caverns, where she runs into Kole.
When she admits she is a meiga, he recoils and threatens to turn her in, and her shadows erupt uncontrollably; when she regains awareness, Kole is dead.
Chapter 25: Roze returns bruised, having cut out the undead Captain’s heart and delivered it to Belladonna as proof of Viola’s death. His tattoo still holds two thorns.
Viola confesses that she killed Kole, and Roze insists she is not a monster. That night he sleeps on the chaise near her bed, and they discuss his parents’ loveless marriage.
Chapter 26: On day six, Viola spots a Hivernian rune on the neighboring tower dome and finds a hidden passage behind her headboard.
She crawls through the tunnel, which collapses around her. She pounds on the stone and thinks about her life, deciding she no longer hates Roze, and tumbles out into a room where Professor Borges catches her.
Chapter 27: Borges gives Viola tea infused with golden apple diffuser leaves and reveals she is a light meiga with powers of creation and divination who hid from the queen’s purge.
As Viola asks about the Book of Castelle, her limbs go numb. Borges admits she poisoned the tea for Queen Maria and intends to take Viola’s heart to protect her own son.
Chapter 28: Viola wakes in the tower to Cerise and Roze arguing over the antidote Cerise gave her. Cerise reveals the real Professor Borges is imprisoned in the dungeons, and Viola learns the queen used Borges’s body.
Roze admits he never hated Viola and was intrigued from her first day at Vandenberghe. They share an intimate night without skin-to-skin contact.
Chapter 29: Viola wakes to find Roze gone and the Book of Castelle open with a rose and a farewell letter in which he confesses his love and plans to trade his life for hers.
Pricking her finger, she drips blood on the pages and the book writes back. King LeĂłn reveals she is his biological daughter and that her locket will open with her blood.
Chapter 30: The locket opens to reveal the dragon coat of arms of Castelle. LeĂłn explains that he and King Alexandre were secret lovers who planned to unite their kingdoms in peace, and that Queen Maria created the Mists out of grief.
He tells Viola the queen’s spirit is anchored to a mirror that pure silver can destroy, and instructs her to be dangerous.
Chapter 31: Viola meets Ed and Fletcher, reveals she is a meiga, and asks them to find Roze. They agree while she enlists Cerise to help infiltrate the dungeons.
Cerise puts on her trench coat and boots and agrees to retrieve Kole’s dungeon key from his room, reassuring Viola through her guilt.
Chapter 32: Cerise knocks out a guard and uses Kole’s golden key to unlock Professor Borges’s cell. Borges reveals she knew Viola was the Castellian heir and kept it secret to protect her.
Viola takes the silver stake with the Castellian crest, and the group heads for the queen’s chambers before dawn.
Chapter 33: Queen Maria distorts the castle architecture and traps the group in the throne room, where a golden lion statue comes alive. Cerise and Viola climb onto the canopy above the thrones, and Cerise slashes the lion with the silver stake. The creature crumbles and the trio escapes.
Chapter 34: Cerise admits she had a secret romantic encounter with Princess Belladonna after the masquerade ball. A hallway becomes a putrid bog and water monsters drag Cerise under; Viola throws her a sword from a suit of armor. Cerise fights off the beasts and insists Viola go on alone.
Chapter 35: Viola enters the queen’s bedroom with Saint Waffles and the silver stake. The mirror comes alive and chokes her, but she stabs its ribs and breaks the queen’s control.
The mirror explains that Queen Maria is a light meiga and Viola a dark one, and shows an Ouroboros symbol indicating the Mists can only be destroyed when the queen’s own magic turns on itself.
Chapter 36: Viola reaches Moody Hall, which the queen’s spirit has turned into a briar garden of black-red roses. The Grimmstones are trapped in vines, the six sisters are possessed, and Saint Waffles is turned to stone. Viola confesses publicly that she is LeĂłn’s daughter and that she accidentally killed King Alexandre on All Hallows Eve.
Chapter 37: A flashback shows King Alexandre confronting Viola and begging her to unleash her shadow magic against the queen; when he seized her throat, her power erupted and strangled him. In the hall, Roze defends Viola and declares his love for her darkness. Viola embraces her identity, forming swords, a crown, and a cape from shadow.
Chapter 38: The queen becomes a giant spider-like beast with eight tooth-filled eye sockets. Viola knocks it into the wall, opening a gash that lets the Mists flood in, dissolving the beast, withering the vines, and freeing the Grimmstones and sisters.
Roze stays behind to die in the Mists and destroy his mother’s remaining power, so Viola closes the doors and kisses him as the fog swallows them both.
Chapter 39: Viola and Roze wake unharmed in a sunlit meadow and realize they have crossed into Castelle, the Kingdom of Death.
Roze touches Viola’s bare cheek and finds his skin is no longer poisonous. She explains that destroying the queen’s hold balanced dark and light magic, and they see the dark spires of the Castellian castle in the distance.
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Characters in This Book
| Character | Role |
|---|---|
| Viola Sinclair (Annette / “Scrivener”) | Eighteen-year-old prefect and linguist at Vandenberghe Academy who hides shadow magic and is later revealed as King LeĂłn’s biological daughter. |
| Prince Roze Roquelart (“Reaper” / “The Huntsman”) | Crown Prince of Aragoa and the queen’s royal assassin, created from Queen Maria’s hatred through dark magic with a lethal poisonous touch. |
| Queen Maria | Queen Consort of Aragoa, a light meiga who created the Mists and Roze, and ordered the execution of meigas. |
| Princess Belladonna | Eldest princess of Aragoa who succeeds Queen Maria as ruler. |
| Princesses Wisteria, Azalea, Oleandra, Narcissa, Hemlock | The five younger royal sisters of Aragoa. |
| Cerise (“CrĂ©mant”) | Viola’s best friend, a commoner whose father died due to royal medicine rations, and a skilled fighter. |
| Kole Belcamp | A prefect at Vandenberghe who rejects Viola upon learning she is a meiga. |
| Professor Borges | Viola’s academic adviser and linguist mentor, secretly a light meiga and Castellian spy. |
| Ed (“Sailor”) | A noble, friend of Roze, and member of the Grimmstone Society. |
| Fletcher (“Squire”) | A student and member of the Grimmstone Society. |
| King Alexandre Roquelart | The deceased King of Aragoa whose relationship with King LeĂłn ended in a failed attempt at peace. |
| King LeĂłn of Castelle | King of Castelle, a shadow meiga, and Viola’s biological father. |
| Sir Patrick Porcher | The History professor at Vandenberghe Academy. |
| Saint Waffles | Viola’s pet gargoyle. |
| Captain of the Royal Guard | The royal officer killed by Roze in the cathedral and later resurrected by Queen Maria. |
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Is Seven Deadly Thorns Right for You?
The book suits readers of young adult dark fantasy and romantasy who prefer gothic settings, slow-building romance, and morally gray protagonists.
The seven-part structure gives the plot a fixed countdown, so pacing stays steady across the 39 chapters.
Readers who follow enemies-to-lovers arcs, fake relationship plots, and hidden-heir reveals will find those elements central here.
The novel also carries heavier material, including class inequality, a poisoned queen, undead figures, and a protagonist’s accidental killing.
Those who prefer lighter fantasy, minimal romance, or standalone plots without court intrigue and secret societies may find the tone and structure less aligned with their interests.
The book is written for ages 16 to 18 and sits at a young adult reading level.
Books Like Seven Deadly Thorns
A Curse So Dark and Lonely by Brigid Kemmerer: Built around a ticking-clock curse, a brooding royal lead, and court-level political stakes.
Serpent & Dove by Shelby Mahurin: A hidden magic user is bound to an enemy witch hunter through a forced union in a dark fantasy setting.
The Serpent and the Wings of Night by Carissa Broadbent: Dark romantasy with a deadly royal court, morally gray assassins, secret lineage, and enemies-to-lovers tension.
Shatter Me by Tahereh Mafi: A female lead whose forbidden power manifests dangerously, paired with a white-haired, secretive male character.
Gothikana by RuNyx: A gothic academic fantasy romance set in a castle with secret societies and eerie visions.
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