Bäckström is heartbroken by a great betrayal, but the work must still be done. Important questions are still to be answered. Who killed Jaidee? And why?
Bäckström has a theory about what might have happened to Jaidee - that she might have faked her own death in the tsunami. But the team is sceptical and Bäckström can't prove anything. Yet.
Eriksson's murder seems to be intractable, not least when Bäckström is suspended from the investigation and Ankan is forced to take the helm. Bäckström begins to dig into the beating of the baron Von Comer and it soon turns out that the two cases are connected.
The notorious homicide detective Evert Bäckström is visited by his neighbor, the boy scout Edvin, who's made a macabre discovery; a woman's cranium with a bullet hole.
Ankan begins to question Bäckström's honesty. Eriksson turns out to have carried a big secret and now light has just been shed on the night of the murder. At the same time, Olsson risks ruining the entire investigation.
Bäckström realizes that he must hand over Pinocchio to the Russians. The only problem is that he does not know where the music box is. The Duck finally sees through Bäckström's lies and their relationship is put to the test.
Bäckström receives death threats and it seems that Tina is the only one who can help him. The police, led by Ankan and Olsson, are spying on Bäckström's best friend in the hope of leading the investigation forward.