The set of Westy's apartment was also used in several episodes of Mission Impossible (1966).
Several noteworthy "onlys" mark this episode: Out of 194 episodes produced, this is the only one to be directed by Jud Taylor, and it features the only series appearances by Vic Morrow (Eric Latimer), Elizabeth Allen (Westy), Mike Mazurki (Kony), and Anitra Ford (Chris, the model).
Anitra Ford (Chris) played a photographer's model a year earlier on Felix Is Missing (1970). Also appearing in that episode was Johnny Silver, who played a bum in that show just as he did here.
The character played by Douglas Henderson staged the suicide of a company head. In real life, Henderson committed suicide in 1978.