Ida Lupino, who starred in this episode, would later direct The Masks (1964). She thus became not just the only woman to direct an episode of the The Twilight Zone (1959), but also the only person to both star in an episode and direct one.
The grand staircase with the imposing banister also appears in The Purple Testament (1960), Elegy (1960) and Long Live Walter Jameson (1960).
Ida Lupino and Jerome Cowan appeared together in the classic Warner Bros. gangster film High Sierra (1940).
John Clarke (Young Jerry Hearndan) died on October 16, 2019, only one week before the 60th anniversary of this episode's original broadcast.