Third Time Lucky tells the story of a timid parson (Howes) who steps in to protect his ward from blackmail at the hands of Garry Marsh and Gordon Harker. Written by Arnold Ridley, who also wrote The Ghost Train and later went on to star in Dad's Army.
William Arnold Ridley, OBE was an English playwright and actor, first notable as the author of the play The Ghost Train and later in life for portraying the elderly Private Charles Godfrey in the British sitcom Dad's Army (1968–77).