This is very similar to the second season episode, "Trick or Treat". In that one, Endora turns Darrin turn into a werewolf for similar reasons.
This episode completed filming on September 11, 1969.
S 7 : Ep 28
Aired 4/22/71 (26:00)
S 7 : Ep 27
Aired 4/15/71 (26:00)
S 7 : Ep 26
Aired 4/8/71 (26:00)
S 7 : Ep 25
Aired 4/1/71 (26:00)
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