DR HOWARD LATIMER ANSWERS WHAT HE BELIEVES TO BE A REQUEST FOR A FAVOUR FROM AN AMERICAN FRIEND BY PICKING UP A FAMOUS GERMAN ACTRESS FROM A LONDON AIRPORT. WHEN HER BODY IS LATER DISCOVERED IN LATIMER'S FLAT HE IS FACED WITH QUESTIONS FROM THE POLICE. STARRING JOHN MILLS, LIONEL JEFFRIES, WILFRID HYDE-WHYTE.