On the ferry heading towards Åland, Klara is approaching Hjerson in order to pitch him the idea for a true crime show. On the ferry a journalist is murdered in her cabin. Hjerson and Klara step into the case against the will of the ferry’s head of security. It is soon evident that there are multiple suspects on the ferry, all with a clear motive for murder.
The sudden death of Magnus forces Hjerson and Klara to rethink who actually is the murderer. At the same time the suspicion against the other suspects deepens. The ferry is acout to arrive in Mariehamn, Åland and time is running out.