One perfect summer day, mother of two Alice walks into the sea . . . and never returns. Her daughters - loyal but fragile Lily, and long-absent Marietta - are reunited by her disappearance. Meanwhile, with retirement looming, DI Fox investigates cold cases long since forgotten. And there's one obsession he won't let a tragic death twenty years before. Can Lily and Marietta uncover what happened to their mother? Will Fox solve a mystery that has haunted him for decades? As their stories collide, long-buried secrets will surface to change their lives forever. Praise for Erin 'Brilliant, compelling, heart-wrenching writing.' PETER JAMES 'An unputdownable thriller.' ELLY GRIFFITHS 'Sensitive and moving...but with a core of pure tension' SUNDAY TIMES 'Full of twists and turns to keep you guessing, this is a gripping and compelling read you won't want to put down' HEAT 'One of those rare finds - a page turner that is equally remarkable for the beauty of the writing. It will suck you in and take you on a journey' JO SPAIN 'Gripping...once started, impossible to put down! ' MINETTE WALTERS