Gravel: Rosa Wilder has identified two suspects in the policeman's murder. The short-tempered Elias and the craftsmen Zingg are involved in mysterious death. The Räbers, victims of blackmail, are unaware that their accountant is in league with the blackmailer.
Shame: Dani Räber isn't giving into Strunz's blackmail: the documents have no importance. Will the criminal fall into the trap? Suspected of murder, Zingg is set free but Kägi is watching him. Rosa Wilder hopes that her sick father will agree to undergo a treatment which could save his life.
Pressure: The party organised by the Räbers to celebrate the end of the dam project is overshadowed by a tragic accident. Kägi asks Rosa to help him with his investigation. Strunz, who needs money in a hurry, prepares a kidnapping.
Shoot: Rosa's son and father have been kidnapped by Strunz. To free them, she'll need to take risks. The accountant Liechti risks going to prison if Strunz is arrested and confesses. The noose is also tightening around Robert Räber.
Dishonour: Elias, the key suspect in the policeman's murder, has vanished without a trace. There follows a manhunt which proves extremely trying for everyone involved. Rosa realises that in Oberwies, nothing is as it seems. Kägi is on the verge of putting an end to Robert Räber's activities.
