This story was also enacted on the Alfred Hitchcock Presents television show, season 1 episode 18 entitled "Shopping for Death".
Barry Morse played a character in a 1964 episode of The Outer Limits called "A Controlled Experiment", which also concerned a pair of men who were monitoring the circumstances surrounding a murder.
At 5.18 a poster can be seen advertising an upcoming live show by Australian comedian George Smilovici who is best known for his comic monologue "I'm Tuff" released in 1984.