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.
Joachim Kemmer
as Chiefinspector Higgins
Julia Bremermann
as Inspector Barbara Lane
Leslie Phillips
as Sir John
Eddi Arent
as Flatter
Gisela Uhlen
as Lady Smith
Pinkas Braun
as Mr. Goldman
Karin Gregorek
as Mrs. Goldman
Arthur Brauss
as Tony Miller
Henry Hübchen
as J. Carpenter
Horst-Günter Marx
as Eugene Phipps
Christiane Reiff
as Ann Pattison
Ralf Richter
as Reynolds
