Sophie Hannah''s unguessable thrillers have readers hooked!''INGENIOUS! I challenge anyone to unravel this clever whodunit'' ?????''Sophie Hannah could well be our modern Christie, such a deliciously complicated plot. Her best yet!!'' ?????''This murder mystery really did blow my mind. It kept me awake at night! Absolutely brilliant'' ?????''This lived up to its press for me. I loved every page -- a truly impossible puzzle!!'' ?????What if the only way to prevent a murder is by confessing to it?Jemma Stelling has confessed to a murder - one she can''t have committed. She has an unshakeable alibi: when Marianne Upton was stabbed to death outside her home, Jemma was at the police station confessing to a murderous obsession with Marianne and a plan to kill her in precisely the way she was killed.So is Jemma innocent? Or is she an ingenious, cold-blooded murderer?Can someone be guilty of the opposite of murder?PRAISE FOR SOPHIE HANNAH:''A new novel by Sophie Hannah is a cause for celebration!'' ALEX MICHAELIDES''One of the best crime writers currently working'' SCOTSMAN''High concept and so satisfying'' GILLIAN McALLISTER''Brain-bending'' GOOD HOUSEKEEPING