Canadian World War II veteran John Graham works in London as a code breaker. Tragedy strikes when his pregnant wife, Carol, is accidentally run over by two crooks who are speeding away from the scene of a murder. Haunted, grieving, and thirsting for revenge, Graham sets out to find the two fugitive murderers.
Robert Preston
as John Graham
Elizabeth Sellars
as Carol Graham
Colin Tapley
as Inspector Davis
Sheila Burrell
as Lorna Dawson
Harold Lang
as Mickie Fraser / Kid Python
Mary Germaine
as Peggy Reece
Stanley Baker
as Milkman
Edith Sharpe
as Mrs. Reece
Edward Lexy
as Cardew
Lyn Evans
as Chuck Peters
