Dorothy Neumann (Crone of Cawdor) was especially known for playing characters in the horror and fantasy genres, such as witches, crones and gypsies.
Unlike most other stories where the audience knows what's going on, this one leaves the viewer wondering about the young lady who meets Darrin as he's going to work and who the old woman who shows up at the Kravitz home. It's a mystery until the story gets going.
Julie Gregg, who played Terry Warbell, went on to play Sonny Corleone's wife in The Godfather (1972).
Dorothy Neumann, who played the Crone of Cawdor, played Otis Campbell's wife on "The Andy Griffith Show".