One aspect that distinguished the SCOTLAND YARD thrillers was the seemingly endless focus on the past and how it influenced the present. in this episode a detective (Ballard Berkeley] solved a 27-year-old murder, which gives a good excuse for the thriller to most so out London's less-than-salubrious areas in search of clues. Berkeley gives a strong performance completely different from his most famous role as the Major in FAWLTY TOWERS.