Book excerpt: Dana Catrell wakes from a drunken stupor in time to see an ambulance pull into her neighbour's house a few doors down. Celia Steinhauser has been murdered. But Dana was at her house only a few hours ago. Celia wanted to show her a photo - a photo of Dana's husband with another woman - and Dana has blank spots of what happened to the rest of the afternoon . . . This is a thriller that makes the reader question everything. Dana, we learn, has a history of mental illness and as she descends into another manic episode, the line between what actually happened and what she has imagined becomes blurred. A gripping domestic psychological thriller for fans of ASA Harrison's The Silent Wife and Sabine Durrant's Under Your Skin, The Pocket Wife will stay with you - as all good thrillers do - long after you've finished it.