THE HIT INTERNATIONAL BESTSELLER <p/>Two brilliant women--a serial killer and her therapist--play "a brilliant game of cat and mouse" in this twisty psychological thriller for fans of Ruth Ware and Alex Michaelides (The Times) <p/>It all started with a telephone call. It was the first time I heard Ida's voice, just a faint whisper, as though she were calling from beyond the grave. <p/>Renowned therapist Clarissa Virtanen is not afraid to look at the darkest side of humanity. Haunted by the death of a young patient, she will do whatever it takes to save the most vulnerable. <p/>But when Ida - angry, damaged and seemingly suicidal - walks into her office, Clarissa may have met her match. For Ida has secrets. <p/>Murderous secrets, which mark her like a bloodstain. Secrets which drive her to kill. And kill again. <p/>Somehow, Clarissa must find the key to unlock her past. So she makes a bargain with Ida - six months to try and stop her taking her own life. But what if she has entered a game more deadly, and more evil, than she could ever imagine? <p/>Don't miss this dark and twisty psychological thriller featuring a face-off between 2 women that's overlain with a sense of poignancy about damaged lives, the power of the imagination to trick-and protect-us, and the passage of time.