Originally, "Witches' Feast" was the final segment, which aired September 22, 1971. In a repeat broadcast, the segment was replaced by Satisfaction Guaranteed (1972), which aired March 22, 1972. In addition, the Season 2 DVD release of "Night Gallery" has the repeat broadcast of the episode, not the original.
Imogene Coca, and King Donovan, who play the loving, married couple in The Merciful', were, in fact, a real, married couple.
As an example of the tight budget and deadline, the story of "Class of '99" had to be filmed within half a working day.
The first of two appearances in the show, for Vincent Price.
"A Death in the Family", which was based on Miriam Allen DeFord's macabre short story, Serling's script treads a delicate line between black comedy and pathos, dealing perceptively with one of the dramatist's pet obsessions: death and the afterlife.