A DARK PAST Dr Olivia Winter is a forensic psychologist whose job is to understand the minds of serial killers. There’s only one monster she can’t understand, her father. A NEW IDENTITY Notorious and brutal, he held a reign of terror until he was caught. His nine-year-old daughter was supposed to be his last victim, but she survived. A SERIAL KILLER WHO WILL STOP AT NOTHING Now, a serial killer is stalking the streets of London. As the body count rises, the police need Olivia’s help to profile him before he can strike again. But to do so, she will need to confront her own demons…

A BRUTAL MURDER When Isaac McFadden is found with the dismembered body of a young man in the boot of his car, it’s an easy conviction for the jury. But, then a notebook is discovered in Isaac’s house, and the police believe they have a serial killer on their hands. A CRYPTIC CODE Within the pages of the notebook is a chart written in a code, which DI Linus Sutton believes holds the location of more bodies. Made up of seemingly random words, numbers and symbols, and with a suspect who is refusing to talk, Sutton enlists the help of Forensic Psychologist Dr Olivia Winter. THE FINAL GIRL Having previously survived attacks from two killers, Olivia is the real life ‘final girl’. But can she unlock the code before her luck runs out?