A serial killer is on the loose in Hamburg, targeting dancers from The Acapulco, a club in the city's red-light district, taking their scalps as gruesome trophies and replacing them with plastic wigs. Chastity Riley is the state prosecutor responsible for crimes in the district, and she's working alongside the police as they investigate. Can she get inside the mind of the killer? Her strength is thinking like a criminal; her weaknesses are pubs, bars and destructive relationships, but as Chastity searches for love and a flamboyant killer - battling her demons and the dark, foggy Hamburg weather - she hits dead end after dead end.

As panic sets in and the death toll rises, it becomes increasingly clear that it may already be too late. For everyone...