Detective Anna Travis is investigating the brutal murder of a young woman whose body was discovered in the Thames, brutalised and severed in half, a red flower in her hair.

With the case bearing an eerie resemblance to the famous unsolved murder case of Elizabeth Short - known as the Black Dahlia - media interest intensifies, and fears of a copycat take hold. But with almost no clues, the case is slowly going cold. That is until the killer reaches out to the press...

Determined to solve the case, Anna must keep her wits about her before the sadistic killer takes his next victim.