Bäckström goes to Thailand to dig for the truth about Jaidee's life and death. At the same time, the investigative team in Stockholm is following a completely different track. They are convinced that Jaidee died in the tsunami and soon Mimi's husband is arrested.

Bäckström is suspended, but still continues his private investigation with the help of his neighbor Edvin. Together, they head to the scout camp to confront Edwin's scout leader Haqvin, who turns out to have connections to both Jaidee and the skull's whereabouts.