Bäckström is suspended, but still continues his private investigation with the help of Edvin. Together they go to the scout camp to confront Edvin's scout leader Haqvin, who turns out to have connections to both Jaidee and the site where the skull was found.

Bäckström is struggling after a big betrayal, but refuses to give up. Important questions still need answers. Who killed Jaidee and why? And is it still possible to die twice, if one can now live twice?

Bäckström is convinced that Jaidee faked her own death in connection with the tsunami, but the group is skeptical and Bäckström lacks evidence for his theory.

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

Homicide investigator Evert Bäckström is convinced that a crime has been committed when a woman's skull is found on an island in the archipelago. But his investigation is opposed by the chief of police; and when the woman's identity is clarified, the whole investigation is turned upside down.

Bäckström travels to Palma, Mallorca, with Niemi to pursue a lead in the murder of his childhood friend Sally, his only unsolved case. Meanwhile, an explosion in central Stockholm may be linked to a drug cartel.

Bäckström turns to unconventional methods to find clues and get around the Spanish police, while Niemi tries to balance the competing interests of Bäckström and Chief Prosecutor Wall.

Bäckström attempts to convince Wall and Toivonen to stay in Palma and continue his investigation, but he has his hands full with two cases that are seemingly intertwined.

When the prime suspect is murdered, Bäckström promises the man's family that he'll find the killer, before he investigates the vineyard's connection to the case.

With new evidence pointing to an unexpected suspect, a large shipment of cocaine is about to arrive in Palma. Wall seeks Morales's help to intercept the shipment before it is smuggled in to Sweden.