History TheUnreveal / LiveActionFilms

* The "Rabbit's Foot" from ''Film/MissionImpossibleIII''. They even mention in-universe that it's a MacGuffin and it doesn't matter what it is exactly. That we know that it is powerful (it has a biohazard label on the container) is enough to know.

* In ''Film/WhoFramedRogerRabbit'', we never find out what [[spoiler: Judge Doom looks like underneath the disguise, beyond his wild, bloodshot eyes. We know he's a toon, but as toons in this world can appear as anthropomorphized versions of just about any animal, plant, or physical object, his true form could be practically anything. Lampshaded when several of the toons start listing various animals and things Doom was not]].

* In ''Film/WhoFramedRogerRabbit'', we never find out what [[spoiler: Judge Doom looks like underneath the disguise, other than his wild, bloodshot eyes. We know he's a toon, but as toons in this world can appear as anthropomorphized versions of just about any animal, plant, or physical object, his true form could be practically anything. Lampshaded when several of the toons start listing various animals and things Doom was not]].

* In ''Film/WhoFramedRogerRabbit'', we never find out what [[spoiler: Judge Doom looks like underneath the disguise, other than his wild, bloodshot eyes. Somewhat lampshaded at the end when several of the toons start listing various animals and things Doom was not]].

* In ''Film/WhoFramedRogerRabbit'', we never find out what [[spoiler: Judge Doom looks like underneath the disguise. Somewhat lampshaded at the end when several of the toons start listing various animals and things Doom was not]].

** ''Film/TheRiseOfSkywalker'' also has a plot point where Finn attempts to tell Rey something as the group were being sucked by a quicksand, before he was drowned inside the pit. This was brought up by a few characters later on, but Finn refuses to give an answer (presumably it was a NotSoFinalConfession of some sort), and then the whole issue was [[AbortedArc abruptly dropped]]. Subverted in that the [[AllInTheManual novelization]] released months later reveals what it really was: [[spoiler: Finn found out at some point prior that he was force-sensitive and wanted Rey to train him. This makes sense as Finn's connection to the Force was hinted at during the final battle when he could sense Rey's (brief) death.]]

* ''Film/MyCousinRachel'': We never do find out the answer to the central mystery, whether Rachel really did kill her husband and whether or not she was poisoning Phillip. Phillip's last line of dialogue has him saying "Were you innocent, or were you guilty? Rachel my torment."

* In ''Film/WhoFramedRogerRabbit'', we never find out what [[spoiler: Judge Doom looks like underneath the disguise]].

* ''Film/{{Quarantine}}'' is very much in the same style as ''Cloverfield''. Near the end of the film, after we have been fed tantalizing hints about the origin of the virus, our protagonists stumble upon a hidden room, full of newspaper clippings, pseudo-scientific reports, and an old recorder. They fire it up, only for it to play so slowly as to be unintelligible. Now, it's probable that it actually says something (again, like the message at the end of ''Cloverfield'') but it's pretty frustrating for the audience.