The Unstoppable Man 1961

Synopsis:

Mitchell is a rich American businessman whose son is kidnapped in England. Naturally, there's a huge ransom demand, but Scotland Yard tells Mitchell to butt out.

Directed by: Terry Bishop
Written by: Alun Falconer & Terry Bishop & Paddy Manning
Runtime: 68 minutes
Tagline: Raw Courage...Raging Action
Cast:
Cameron Mitchell
Cameron Mitchell
James Kennedy 
Marius Goring
Marius Goring
Inspector Hazelrigg 
Lois Maxwell
Lois Maxwell
Helen Kennedy 
Denis Gilmore
Denis Gilmore
Jimmy Kennedy 
Humphrey Lestocq
Humphrey Lestocq
Sgt. Plummer