Starring: Joanna Pettet, Rod Serling, Larry Watson, Matt Pelto
Visible crew/equipment: In the 1920s, Agatha takes a taxi to Muñoz's house. In the background, through the taxi's rear window, you can see a large white 1970s Universal Studios panel truck being loaded next to another building on the back lot. (00:02:45)
Visible crew/equipment: When the landlady opens the glass-paned door, it reflects a large, round studio light. (00:04:10)
Continuity mistake: The shots of Doran from his left rear shows him a couple feet away from the wall while frontal shots show him backed up against the wall.
Rod Serling: For those of you who've never met me, you might call me the under-nourished Alfred Hitchcock.
Trivia: The scene of the spooky castle on the rocky shore was used in episodes of "Gilligan's Island" featuring Vito Scotti as mad scientist Boris Balinkoff.