Actor Victor Buono, playing the gray haired John Sylvester Fossette, was actually two years younger than actor Douglas Lambert (as Doug Lambert), who played Douglas McKenzie, the young man claiming to be Ramona Carver's son.
Last TV appearance for Tom Conway, who was best known for the Falcon film series and for being the brother of George Sanders (whom he replaced as The Falcon). His final film, What a Way to Go! (1964), was released almost three months after this episode aired. He passed away in April 1967, a bit more than three years after this episode aired.
Show features three actors that would later play villains in the TV series Batman (1966): Victor Buono as King Tut, Malachi Throne as False Face, and Donald "Red" Barry as Tarantula/The Grand Vizier.
James Stacy's career as a romantic leading man was cut short by a vehicular accident in which his motorcycle was struck by a drunk driver, resulting in the loss of multiple limbs. Stacy sued the bar where the driver of the car had been repeatedly served drinks well beyond the point where the bartender should have realized the man was too inebriated to drive safely. The case set a precedent by holding the establishment partially liable for Stacey's injuries and loss of income.
The title is based on the nursery rhyme about Simple Simon and the Pieman.