For all its paranormal happenings and "horror film" atmosphere, and with all its Lon Chaney, Phantom of the Opera and Frankenstein references, it's surprising that this title was not a Halloween episode: it was actually broadcast in January, the day after New Year's Day.
After having here laid the foundation for Tiffany's uncanny background, her psychic abilities and paranormal skills are never mentioned again, in any other episode.
The "atmosphere player" blonde woman who turns around when Kelly mistakes her for Kris in the pirate costume, is none other than Cis Rundle, a recurring extra on the series, and Cheryl Ladd's stand-in and stunt double.
The ominous Mrs. Craig was played by none other than veteran actress, Virginia Gregg. She was a favorite of Jack Webb---and a staple in his #1 series, Dragnet 1967 (1967).
Katharyn Powers, aka Katharyn Michaelian Powers, wrote this ghost story. She is known for writing other eerie or spooky scripts for several 1970s and 1980s television programs such as Le voyage extraordinaire (1977) and L'île fantastique (1977).