A woman is found dead, but the place of occurrence does not coincide with the crime thanks to Rex and Moser discovers that the woman was killed in the castle of Schonbrunn and then taken elsewhere, and as if that was not enough work in the zoo in the park a man with a criminal record. Moser arrests him, but he declares himself a stranger to crime, but admits having concealed the corpse for fear of being suspected. Moser believes him and begins to investigate the environment of the victim, and learns that the victim had a relationship with your gynecologist.