House of Blackmail

"A young man is being blackmailed and needs to borrow the cash from his sister. She insists on meeting the blackmailer so travels to his remote country house; en route picking up a curious hitcher. They arrive and during the course of the night the blackmailer (Alexander Gauge) is murdered. Unusually, the lead female role - played here by Mary Germaine - has a much more substantial role in this mystery as they attempt to identify the murderer. William Sylvester plays the hitcher-cum-sleuth well and Denis Shaw is good as they nosey butler in this short-but-sweet double-crossing pot-boiler that doesn't hang about - it's pretty non-stop for 70-minutes."