13 Ghosts (1960)

Continuity mistake: When the boy slides down the banister, money falls to the ground and the boy doesn't see it. In the next shot, as the boy is walking away, behind him the money is lying differently than when it landed. Later, when the boy finds the money, it is again in a different position.

Guy

Revealing mistake: If you look closely, you can see the strings moving the Ouija board planchette while it's floating in the air towards Medea. (It's easier to spot them on the high-definition Blu-Ray version, but they can be faintly seen in other versions of the film if you know where to look).

TedStixon

Trivia: The film contains some references to co-star Margaret Hamilton's famed role as the Wicked Witch in "The Wizard of Oz." During the film, Buck finds her intimidating and refers to her as a "witch."

Trivia: The exterior of the house was actually shot at the Winchester Mansion. (Albeit not at the main entrance.) The Winchester Mansion was owned and built by Sarah Winchester, who was convinced that she was being haunted by the ghosts of those that were killed by the Winchester rifles her family had created. Throughout her life, she had more and more construction done on the house, often creating stairways and doors leading to nowhere, to try to "trick" the ghosts and keep them from getting her.

TedStixon

Buck Zorba: There's furniture and books and most of it I haven't even seen yet.

Buck Zorba: Elaine?
Elaine Zacharides: Yes Buck?
Buck Zorba: You really are a witch, aren't you?
Elaine Zacharides: Ask me no questions, and I'll tell you no lies.

Ben Rush: Are you all moved in?
Buck Zorba: There wasn't anything to move except us.

Question: Is the lawyer who brought the will to the apartment in the beginning the same guy who died in the cube when they were capturing the 12th spirit?