In a taut psychological thriller filled with breathtaking twists, Joseph Souza explores the tangle of betrayal and deception between two neighbouring couples, and asks how well we can really know others - or ourselves. It all seems so promising at the start. When Leah and her husband, Clay, move from Seattle to Maine, she envisions a vibrant new neighbourhood packed with families - playmates for her twins, new friends she can confide in and bond with....

On the eve of his college graduation, Harry is called home by his step-mother Alice, to their house on the Maine coast, following the unexpected death of his father. But who really is Alice, his father's much younger second wife? In a brilliant split narrative, Peter Swanson teases out the stories and damage that lie in her past. And as her story entwines with Harry's in the present, things grow increasingly dark and threatening - will Harry be able...