Edward Underdown, Maxwell Reed, Natasha Parry, William Hartnell, Barbara Murray, Robert Long, Cyril Smith, Leonard White, Ernest Haines
A killer called 'The Dark Man' commits double murder. This is witnessed by the young aspiring actress Molly Lester. The Dark Man tries everything to put Molly out of the way. Detective Inspector Viner of Scotland Yard investigates the murders.
Poor old "Molly" (Natasha Parry) has the misfortune to witness the eponymous character commit double murder. He knows she knows, and she knows he knows that she does, and so now he (Maxwell Reed) is determined to shut her up before she can tell pursuing police inspector "Vine" (Edward Underdown) and he faces the gallows. There's no real jeopardy here - we all know who did what to whom, but it's st...