In most cases, movies reveal all of their secrets the first time you sit through them, yet there are times when the fans suspect there was more going on than meets the eye.
These instances are always the subject of heated debate, destined to rage for eternity, or at least until the director or actor involved has the decency to dispel the ambiguity.
A famous example is the Han-Greedo 'who shot first' controversy from Star Wars: A New Hope. No matter how many times they saw the original footage of Solo pulling the trigger, there was a group of fans who flat-out refused to believed the hero just gunned the green-skinned alien down.
In this particular instance, George Lucas addressed the matter by altering the scene for the movie's 1997 re-release to make it abundantly clear Greedo was the aggressor, a move more contentious than Han's trigger-happy antics in the eyes of some.
On other occasions, actors and filmmakers address these controversies, fan theories and inconsistencies head on many years down the line, presenting the movie in question in a whole new light.