Sweetheart - Chelsea Cain, Pan Books

'I want you,' Gretchen said. 'I've always wanted you.' Investigative journalist Susan Ward is about to print the story of her career - proving long-rumoured allegations about a respected senator's affair with a young girl. But the day before her story is published, the senator is killed in a car crash. Detective Archie Sheridan is trying to rebuild a life with his family. But he remains haunted by beautiful, ruthless serial killer Gretchen Lowell - the woman who tortured him then saved his life. Now that she is safely behind bars, Archie is determined to stay away from her. And when a mysterious child leads him to two bodies in Forest Park, Archie must focus his attention on the case. But then the unthinkable happens: Gretchen escapes. The only thing this gorgeous psychopath cares about is Archie - and with her on the loose, everyone he loves has become a target...