Real, compulsive and intense: Cat Clarke is the queen of emotional suspense. For fans of Paula Hawkins, Gillian Flynn, Megan Abbott and Jandy Nelson.

Jem Halliday is in love with her gay best friend. Not exactly ideal, but she's learning to live with it.

Then the unspeakable happens. Kai is outed online ... and he kills himself.

Jem knows nothing she can say or do will bring him back. But she wants to know who was responsible. And she wants to take them down.

A searing story of love, revenge and betrayal from a bestselling author.

"An emotional page-turner" - Teen Now magazine

"Perfect and heart breaking at the same time ... A brilliant read" - Overflowing Library

"Most definitely Cat Clarke's best novel yet" - Serendipity Reviews

"An utterly gripping tale and rips into those dark places inside us all where revenge blooms and I defy you not to gasp and be jolted out of your seat as you read it" - Sister Spooky

"Undone is what contemporary YA should be: gritty, thought-provoking and emotionally involving. Brilliant." - So Many Books, So Little Time

"We laughed and we cried, but MAN were we not expecting the explosive conclusion" - Sugarscape

"A powerful novel, but Clarke uses enough humour to make sure that it's never relentlessly bleak" - Bookbag

"A searing story of love, revenge and betrayal" - U magazine

"Simply put, Undone is astounding ... It's just brilliant" - Writing from the Tub

"Incredible - pure and simple" - Writing from the Tub on Cat Clarke

"Undoubtedly one of the most exciting and talented YA writers in Britain" - Library Mice on Cat Clarke

"I wholly, unabashedly and completely recommend this book" - Inis Magazine on Cat Clarke

"Clarke...succeeds brilliantly, thanks to the reality of the characters and the depth of the emotion" - The Scotsman on Cat Clarke

"Moving, thought provoking and utterly gripping from start to finish" - Mizz on Cat Clarke

"Clarke excels at genuine page-turners and I read this in one greedy sitting" - The Bookseller on Cat Clarke