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.

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 in a desperate attempt to impress Ankan.