Friend by day. Traitor by night. The second book in the dark, twisting YA trilogy about a teen assassin's attempt to live a normal life.

'[A] dark, enthralling thriller' The Guardian

Teen assassin Isabel Ryans now works for Comma, and she's good at it: the Moth is the guild's most notorious killer, infamous throughout the city of Espera. But Isabel still craves normality, and she won't find it inside the guild. She moves in with a civilian flatmate, Laura, and begins living a double life, one where she gets to pretend she's free.

But when Isabel's day job tangles her up with an anti-guild abolitionist movement, it becomes harder to keep her two lives separate. Forced to choose between her loyalty to her friends and her loyalty to Comma, she finds herself with enemies on all sides, particularly those from the rival guild Hummingbird, putting herself and Laura at risk.

Can Isabel ever truly be safe in a city ruled by killers?

From Finn Longman, an exhilarating voice in YA fiction, comes an addictive trilogy for fans of global phenomena The Girl with the Dragon Tattoo, Killing Eve and The Hunger Games.

PRAISE FOR THE BUTTERFLY ASSASSIN:

'An immersive, fast-paced thriller' The Irish Times

'An electrifying debut!' Chelsea Pitcher, author of This Lie Will Kill You

'A heart-in-your-mouth thriller that grips you from the first page until the very last.' Benjamin Dean, author of The King is Dead

'A bold, jagged and uncompromising thriller that will keep you guessing all the way to the end.' Tom Pollock, author of White Rabbit, Red Wolf

'Sharp and layered, with a bright beating heart. The Butterfly Assassin will lure you deep into a fascinating and dangerous new world.' Rory Power, author of Wilder Girls

'An utterly addictive story. I told myself just one more chapter well into the night.' Emily Suvada, author of This Mortal Coil

'Fierce, thrilling, and impossible to put down. Packed full of amazing friendships, plot twists and a desperate fight to survive' C. G. Drews, author of The Boy Who Steals Houses