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!!' ?????It's every mother's nightmare . . . Alice Fancourt left her baby daughter for two hours.Her husband was supposed to be watching her. But when Alice returns, she instantly realises something is wrong.The baby sleeping in the cot is not her daughter. As her husband becomes increasingly hostile, insisting that she is either crazy or lying, Alice realises her baby is in grave danger - and she might be too. Can Alice make anyone believe her before it's too late?'Terrifying' Scotsman'Ingenious' Sunday Times