Material additions and research status, dated so readers can tell what changed and what still needs checking.
17 September 2026 · spoiler-light
Maps, timelines and evidence diagrams now use written labels, borders and ordering—not colour alone—to carry meaning. Increased-contrast and forced-colour settings strengthen those distinctions automatically.
No plot outcome is revealed here.
A new cross-file audit records composite filming places, architectural clue methods, the location status of all twelve episodes, live venue checks and recurring writing patterns with clear attribution boundaries.
New ledgers record Lucy and John relationship changes without inventing private attitudes, and connect central Cambridge locations to current official rail, bus, walking and Park and Ride sources.
New spoiler-light registers cover James-linked objects, places and communications; theory confidence; fair-play and viewer-solvability labels; specialist knowledge; deduction mistakes; a logic glossary; and John Taylor role changes.
First-person interviews now identify Robert McKillop’s spatial-puzzle method and Jill Robertson’s three-dimensional planning, while credited production accounts confirm genuine working puzzle content made for on-screen props.
The UK Series One DVD release is now recorded with format, distributor, region, disc, running-time and subtitle details. A separate dated watchlist preserves six pre-broadcast questions for the Christmas special without presenting them as predictions.
Every file with reader tools now offers a page-specific correction link. Episode dossiers have a cleaner print layout, including visible link destinations.
The theory board gains a plain-language explanation. The accessibility record now states the transcript policy for any future original audio or video.
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Reviewed 8 October 2026
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New character profiles cover Ronan Ziegler, Joanne Kemper, Gareth Fisher, Ethan Cole, Caitlin Sullivan and Clint Radley. The Series 2 record is complete, and the atlas now links the Perrin’s Lane and Liberty Tea Rooms location files.
Making of Ludwig · International titles and broadcasters · Shows to watch next. Ratings, awards, music and travel guides have also been updated.