The transferred policeman Salmander just found a dead body on the island and quickly becomes convinced that there is talk of a murder. There are several suspicious people in the community, but as an alien and southerner he gets little help from the locals.

Salmander goes undercover in Solvik jail to follow a lead in the murder case. When his only ally in prison dies from a peanut-related accident, Salmander is put behind bars for real. Not only must he follow a trail in the case, he must also find a way to get out of prison. Meanwhile, Johanne finds a very special clue in Hellfjord's murder mystery.