The action of this crime story is set in Warsaw in June 1942. In suspicious circumstances, the wife of a respected lawyer is murdered. A detective, who is an officer of the Navy Police cooperating with Germans, and at the same time a sworn soldier of the Polish underground, tries to solve the mysterious murder. Further clues multiply suspicions and reveal the deeply hidden secrets of the deceased and unclear connections of the lawyer with a high-rank SS officer. Will the inspector find the woman's murderer before he kills his next victim?