When author Ellie Erikson is diagnosed with Tay-Sachs disease, a rare, incurable illness, she fears for her future but worse is to come. Suddenly strange things start to happen, packages start to arrive, her bank account is closed and when her boyfriend, Matt, is knocked out, and swears it was Ellie who attacked him, she starts to doubt her sanity. Even Jake, her beloved dog, is confused by 'good' and 'bad' Ellie.Ellie's world is turned upside down when she comes face to face with her double. Eve, her alto ego, who has been locked in a cell all her life watching images of Ellie's happy world on a screen, wants revenge when a fire at the laboratory helps her to escape. But the 'sisters' realise they need each other to get to The Creator who has been playing games with their lives. After Matt's death they go on the run to try and hide but The Creator seems to know every move they make before they make it. The gripping climax to this book will give you and the girls all the answers but only one of them can survive.