A mystery short film typically runs 5-15 pages and is defined by compact puzzle films that pose a single intriguing question and answer it with a revelation that reframes everything the audience assumed. short mysteries are about the satisfaction of the solve.
Short mysteries need a single, clean question: Who did it? What happened? What's really going on? Plant three clues — one obvious, one hidden, one misleading. The investigation should unfold through action and observation, not exposition. Limited characters mean each one must be a suspect or a clue. The reveal must be both surprising and fair — the audience should be able to rewatch and see they had the information all along. Atmosphere and tone do the work that procedural detail does in longer mysteries. The ending can be a definitive solve or a chilling ambiguity.
Establish the mystery immediately (1-2 pages). Investigate through 2-3 scenes of discovery (3-8 pages). Deliver the revelation (1-3 pages). Total: 5-15 pages. Festival-ideal: 8-12 pages.
Plot backward from the solution. Know who did it and why before you write page one.
Plant every clue the audience needs to solve the mystery — hide them in plain sight among red herrings.
Give your investigator a unique perspective or method that makes their approach to the case distinctive.
Write the reveal scene first, then go back and seed the clues that make it satisfying.
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