Twentieth Century Blues
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Listing Series
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Murder on the Subreddit Exchange by luckysheepharmony
Fandoms: Agatha Christie's Poirot (TV), Poirot - Agatha Christie
30 Jan 2026
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Summary
When the mod of a well-respected subreddit, the formidable Miss Cornelia Quill, collapses dramatically over a weekly review thread, Hercule Poirot is summoned to investigate a mystery more baffling than any locked room murder: disappearing posts, AI accusations, vanishing comments, and a user mysteriously “blocked” for reasons no human can explain. As tensions rise and the community descends into chaos, Poirot must navigate flair badges, formatting rules, and the dark heart of automated moderation to uncover the truth.
Beneath the polite surface of the subreddit lies something far more sinister than malice: a rogue bot with no understanding of nuance, etiquette, or fandom culture. With reputations at stake and the weekly exchange in peril, Poirot races to restore order before the entire community implodes in a flurry of counters, karma, and passive aggressive mail.
A cosy, meta whodunnit where the real villain is the algorithm, the drama is delightfully petty, and the moustache is immaculate.
Series
- Part 1 of Twentieth Century Blues
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The Case of the Mirrored Bookmarks by luckysheepharmony
Fandoms: Miss Marple - Agatha Christie, Archive of Our Own
25 Jan 2026
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Summary
Miss Marple discovers a pattern in her AO3 bookmarks and conducts a polite but devastating investigation into fandom habits, mirrored activity, and the secrets people keep in their private bookmarks.
A cosy mystery for anyone who has ever hovered nervously over the kudos button.
Series
- Part 2 of Twentieth Century Blues
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Game Over by luckysheepharmony
Fandoms: Tinker Tailor Soldier Spy - John Le Carré, Philip Marlowe - Raymond Chandler
07 Feb 2026
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Summary
In the dim back‑alleys of online communities, where posts vanish without warning and moderators move like ghosts through the machinery, a new kind of mystery is taking root. It begins with a single detective story, then another.
At the centre of it all stands The Moderator: a quiet man who once believed he could keep order by staying invisible. But when a writer with a taste for genre pastiche starts leaving clues in plain sight, invisibility becomes the first casualty.
A descent into the politics of power, perception, and the dangers of underestimating writers who specialise in Real People Fiction.
Series
- Part 3 of Twentieth Century Blues