Whenever a criminal is killed in London, a black Jaguar is nearby, with a white cat always sitting in the passenger seat. Inspector Higgins and Inspector Lane find a joker card on all the victims. Their investigation leads them to a diamond smuggling ring.

• Rialto Film
• RTL
• Joachim Kemmer
• Julia Bremermann
• Leslie Phillips
• Eddi Arent
• Gisela Uhlen
• Pinkas Braun
• Karin Gregorek
• Arthur Brauss