"British crime film directed by Peter Duffell and starring Bernard Lee, Moira Redmond and John Van Eyssen, loosely based on the 1918 novel "The Man Who Knew" by Edgar Wallace."
Bernard Lee
as Inspector Mann
Moira Redmond
as Freda Strickland
Stanley Morgan
as Sergeant Rutledge
John Van Eyssen
as Merril
Gordon Boyd
as Rex Holland
Mark Singleton
as Shilton
Victor Platt
as Harold Strickland
Ernest Clark
as Ashton
Nicholas Smith
as Pawn Shop Assistant
Larry Martyn
as Pete Lake
Peter Duffell
Director