Unstoppable Man (1959)

In this suspenseful crime drama, a canny American businessman living in London devises an ingenious plan to get his kidnapped son back. First he sends the required ransom. As per his plan, the abductors begin fighting amongst themselves for the loot. The death of one crook leaves behind invaluable clues to the boy's location. In the film's exciting climax, the father uses a flame-thrower to save his son. Meanwhile Scotland Yard captures the villains. ~ Sandra Brennan, Rovi