When Dr. Howard Latimer finds the German actress whom he had just met at the London Airport murdered in his flat, he is led into a world of murder, blackmail, and a fake passport scam.
John Mills
as Dr. Howard Latimer
Derek Farr
as Kenneth Palmer
Noelle Middleton
as Laura James
Wilfrid Hyde-White
as Maj. Harrington aka Robert Brady
Roland Culver
as Detective Inspector Dane
Mervyn Johns
as Dr. George Kimber
Rène Ray
as Mrs. Ambler
Lionel Jeffries
as Geoffrey Windsor
Lisa Daniely
as Frieda Veldon
David Williams
as The Detective Sergeant
Diana Lambert
as Latimer's Office Nurse
Hal Osmond
as Joe - Golf Caddy
