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.

Directed by: Peter Duffell
Runtime: 54 minutes
Cast:
Bernard Lee Bernard Lee
Inspector Mann 
Moira Redmond Moira Redmond
Freda Strickland 
Stanley Morgan Stanley Morgan
Sergeant Rutledge 
John Van Eyssen John Van Eyssen
Merril 
Gordon Boyd Gordon Boyd
Rex Holland 
Mark Singleton Mark Singleton
Shilton