The Black Widow

Mark Sherwin (Ayres) is driving in the country when he notices a man lying at the side of the road. Assuming the man is the victim of a hit-and-run, he stops to offer assistance, only to be coshed and left stunned. On recovering his senses, he staggers towards a nearby farmhouse where he collapses. Meanwhile, the car thief comes to grief while speeding round a corner on a clifftop road. Sherwin regains consciousness, but is suffering from complete amnesia.