Borchert and his boss Dominique can't believe it: Captain Furrer, respected top investigator of the Zurich Criminal Investigation Department and fair opponent of the unorthodox lawyer duo, is now himself under urgent suspicion of murder! Corrupt colleagues want to pin the murder of young policewoman Emmi, who could have been dangerous to them as a witness, on him. Emmi had confided in her mentor Furrer that brothel owner Jean Berger had been deliberately shot during a raid by colleagues. Now Furrer fears he will be eliminated himself. With Dominique's help, the suspended captain goes into hiding to prove his innocence on his own.