* AdaptationDisplacement: Most people don't know about ''Film/MysteryOfTheWaxMuseum'', 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. ([[EmbeddedPrecursor 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.
* HilariousInHindsight: Jarrod's description of his new career now sounds like LeaningOnTheFourthWall, 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.
* MoralEventHorizon: Sure Burke arson and insurance fraud will get you some money but [[spoiler: is conspiring to murder your partner really worth it?]]
** Henry Jarrod [[spoiler: considered his art and its temple (the museum) more important than the people who were going to be sacrificed (by him) to it.]]
* RetroactiveRecognition: [[Film/OnceUponATimeInTheWest Harmonica]] is Igor.
* UncannyValley: 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.