- Adaptation Displacement: Most people don't know about Mystery of the Wax Museum, though it didn't help that it was thought to be lost until a print turned up in the late 1960s, and it was not fully restored until the 1980s. (It's a bonus feature on the 1953 film's DVD.)
- Even to one more degree Mystery of the Wax Museum in itself was an adaption of a play that is even more forgotten.
- Hilarious in Hindsight: Jarrod's description of his new career now sounds like Leaning on the Fourth Wall, in light of the turn Vincent Price's career soon took.
Jarrod: I'm going to give the people what they want: sensation, horror, shock... Send them out in the streets to tell their friends how wonderful it is to be scared to death.
- Moral Event Horizon: Sure Burke arson and insurance fraud will get you some money but is conspiring to murder your partner really worth it?
- Henry Jarrod considered his art and its temple (the museum) more important than the people who were going to be sacrificed (by him) to it.
- Retroactive Recognition: Harmonica is Igor.
- Uncanny Valley: Wax museums usually have a touch of this anyway, but it gets extra creepy when Sue is walking around in semi-darkness after it's closed.