Three years ago, Saga Bauer received a postcard with a threating message about a gun with nine white bullets – one of them intended for Joona Linna – and Saga was the only one that could save him. Saga showed the postcard to Joona, but time passed and the threat faded as a meaningless provocation. Until now.
A bag with an almost completely dissolved body is found strapped to a tree in Kapellskär. A milky-white cartridge is found at the murder scene. Through complex riddles, a bestial perpetrator appears to give the police the opportunity to stop the series of murders.
Joona Linna and Saga Bauer fight side by side to solve the puzzle and save the chosen victims before it’s too late. The violent hunt becomes increasingly desperate. Maybe this killer is impossible to stop, maybe they are already stuck in the spider’s web.