Writing the Whodunit: Clues, Suspects, and the Fair-Play Mystery

Course summary: Learn to build and revise an original whodunit mystery, from the central crime and suspect motives through clues, red herrings, interviews, pacing, and an earned solution. Forty practical lessons teach mystery traditions, detective and victim development, setting, technology, fair-play plotting, and revision. You will write scenes, keep a clue ledger and alibi timeline, test your solution with readers, and complete a polished 3,000–4,500-word mystery with a 100-point capstone rubric.

Course overview: This course is for beginning and developing fiction writers who want to create mysteries readers can solve alongside a believable detective. No specialized forensic background is required. The ten modules progress from defining a reader promise to designing a crime, creating a suspect group, structuring a fair investigation, and revising a complete story. Work through four lessons per module; allow roughly 2–4 hours per lesson and additional time for the final draft.

Learning outcomes: By completion you can distinguish motive from proof, write a central puzzle, design four suspects with different secrets, plant and pay off clues, track alibis, control suspense through dialogue and setting, account for modern technology, revise a reveal for fairness, and pitch the resulting story.

Completion and assessment: Complete each lesson’s Writing lab and self-check; preserve a portfolio of investigation sketches, suspect grids, scene drafts, a clue/payoff ledger, and revision notes. Finish the story and capstone documentation described in Lesson 10.4. A lab can be revised until its evidence and reader-facing effect meet the listed checks.

AI Writing Partner: Optional AI may act as a questioning coach—for example, checking whether an alibi can be followed from facts already shown. Supply only material you choose to share; ask for questions, alternatives, and inconsistencies rather than a ghostwritten story. The student decides the crime, motives, clues, prose, and revisions. All invented passages in this course are instructional examples, not claims about real cases.