Probe 7, Over and Out (1963), the next episode of The Twilight Zone (1959), would not air for two weeks. The broadcast of the following week's episode on November 22, 1963, which was to have been Night Call (1964), was canceled due to the assassination of U.S. President John F. Kennedy in Dallas, Texas that day.
Robby the Robot from Forbidden Planet (1956) is used in this episode. However, the dome portion of his head has been altered. This is one of many instalments to use props from "Forbidden Planet", since the series was frequently filmed at MGM, which kept the film props in use for many years. This also marks the last of Robby's three Twilight Zone appearances, having previously featured in "One for the Angels" and "The Brain Centre at Whipple's".
The living room and entry hall sets were previously used in the fourth season episode Miniature (1963).
At one point Barbara calls the robot "Frankenstein". Two decades earlier, Cedric Hardwicke had played Dr. Frankenstein in the Universal film The Ghost of Frankenstein (1942).