Mr. Weißenburger is found killed in a dumpster in front of a motel. Since the police discovers that his son Theo was in that motel with a prostitute, he is arrested. Theo pleads not guilty and asks Dr. Franck for defense: Matula has got to track down the prostitute, who is the only one who could give him an alibi, but her real name is not known.—AleX_DJ