. . If you are looking for a summer read, I've found it!' HOLLY WILLOUGHBY'Page-turning time-loop thriller .

. . An intelligent puzzle full of heart and good sense' GUARDIAN'A mind-bending page-turning thriller.

Non-stop thrills right from the start. A rare gem' STEVE WRIGHT, RADIO 2 BOOK CLUB'A spellbinding "whydunnit". A novel with a difference' SUNDAY TIMES'Skilful, satisfying.

Couldn't put it down. Don't miss it!' OBSERVER, 'THRILLER OF THE MONTH'CAN YOU STOP A MURDER AFTER IT'S ALREADY HAPPENED? . .

. DISCOVER THE MOST TALKED ABOUT THRILLER OF THE YEAR_________It's late. You're waiting up for your son.

Then you spot him: he's with someone. And - you can't believe what you see - your funny, happy teenage boy stabs this stranger. You don't know who.

You don't know why. You only know your son is charged with murder. His future is lost.

That night you fall asleep in despair. But when you wake . .

. it is yesterday. The day before the murder.

Somewhere in the past lie the answers - a reason for this crime. And your only chance to stop it . .

. _________'Masterfully plotted and ingenious. One of the best books I've read this year' SUNDAY EXPRESS'A genre-defining masterpiece.

An instant classic' HOLLY SEDDON'I was gripped' JANE CORRY'Brilliantly original, so tense and so moving' LUCY CLARKE'So riveting you'll pull a sickie and ignore all family and friends until the breath-taking final page' CELIA WALDEN'Mindblowingly good. I'm in awe' JANE FALLON'Fiendishly clever and flawlessly executed' ROSIE WALSHPRAISE FOR GILLIAN MCALLISTER:'Gillian McAllister just gets better and better' CLAIRE MACKINTOSH'Like watching a gripping, claustrophobic box set' CLAIRE DOUGLAS'The queen of the moral dilemma' HOLLY SEDDON'If Jodi Picoult wrote thrillers, they would look like this' ROSMUND LUPTON 'Any writer can keep you turning the pages - few can make you care this much' ERIN KELLY