The central mystery must be introduced in the cold open or first scene — don't make the audience wait. Layer at least three levels of mystery: the immediate question, the deeper conspiracy, and the personal mystery of the protagonist. Every character should seem like they could be hiding something. Clue distribution should be deliberate — plant them in moments the audience might overlook on first watch. Establish the tone: is this a cozy mystery, a dark conspiracy, or something between? The pilot should answer one question definitively while opening three more. The investigator's personal connection to the case should be hinted at, not fully revealed.
Cold open with the event that creates the mystery (3-5 pages). Act one brings the protagonist into the investigation and introduces the world of suspects (12-15 pages). Act two follows the investigation through interviews and discoveries, with a midpoint false lead (18-22 pages). Act three delivers a pilot-specific revelation that answers the immediate question while deepening the series mystery (12-15 pages). Target 55-65 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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