Who Shot Otto Mueller?

After the murder, Otto's youngest son Oliver, who was once a talented musician, is brought in for questioning.

Oskar, Otto's eldest son and former athlete, has waited a long time for some promises to be fulfilled.

Marleen, Otto's young mistress, reveals some interesting facts from the past. Including a gripping story about Otto and a strange story about a bet.

Anneken's brutal habit becomes known to the detectives; Agnes discovers a new fact about Gabriel; a family therapist, shares her memories of young Otto and how it all started.

Anneken, Oskar's housewife, brings unexpected new leads into the case. The relationship between the detectives takes a turn.

Oliver's seemingly carefree and charming wife, Monika, recently received an expensive gift from Otto, much to everyone's surprise; time is running out, and more and more is at stake.