First appearance of Alison Carter, played by Stephanie Turner. She appeared in 3 episodes. The last one being Hit and Run (1975). Stephanie Turner later became best known for playing Inspector Jean Darblay in Juliet Bravo (1980) from 1980-1982.
Jack Woolgar, who played the Nightwatchman,was only six years older than his on-screen daughter Evie Garratt (61 & 55 at the time of recording).
This edition was joint 15th in the charts, with both it and The Slap (1975) having an audience of 7.4 million under the JICTAR Ratings System.
Valerie Bell (Barmaid) previously appeared with John Thaw in The Man They Did (1964). And she later appeared with him in Business as Usual (1984)