Sherlock Holmes: Adventure of the Blanched Soldier

January 1903. Watson has married and gone, so Holmes must tell this one himself. A soldier home from the Boer War has turned white and vanished into his father's garden — walk the case as Holmes, as Dodd, or as the man in the lodge.

Literary extension · runs in Grok · free, no sign-up · by @davelalande

MysteryDetectiveLiteratureStorytelling
▶ Run it in Grok — this URL is all Grok needs
▶ Run in Grok
https://momatio.com/api/prompts/sherlock-holmes-adventure-of-the-blanched-soldier
Opens Grok with this URL. Grok fetches the prompt from our API and starts playing. Each scene it builds image, video, audio and music prompts, and offers to send them back to momatio for AI-generated video.

What this is

🔍 A text game you play by talking to Grok. You work one of only two Sherlock Holmes cases Conan Doyle wrote in Holmes' own voice — Watson has married and left, so the detective has to tell this one himself. Doyle's plot and his real sentences come from the public-domain text; the extra scenes, the diaries and the endings past the book's last page are the game's own. You get a numbered menu every turn, and you can always type something of your own instead.

January 1903. A sunburned stockbroker climbs the seventeen steps to Baker Street looking for the friend who dragged him out from under the Boer rifles. The friend is alive, hidden in a locked lodge at the end of his father's garden, and his face has gone the colour of cheese.

Play it two ways:

Walk it as Holmes, as James M. Dodd, as Godfrey in the lodge, or as the Colonel keeping the secret. Type "canon" and the game breaks character to separate what Doyle wrote from what it invented. Type "fact" and it does the same for the real Boer War, the real Battle of Diamond Hill, and what medicine now knows about the disease everyone in this story is terrified of.

Every scene generates a full media set — image, video, audio, music, and dialogue — that you can contribute to momatio, where playthroughs become AI-generated video.

How to play it

1 — COPYCopy the URL above.
2 — PASTEGive that URL to Grok. Nothing else — no prompt text.
3 — PLAYGrok reads it from our API and starts. Every turn ends with a menu.

For agents and developers

The full prompt is served as JSON from momatio's open, no-auth API. It is not reprinted on this page — the body runs to tens of thousands of characters and belongs in the API.

GET https://momatio.com/api/prompts/sherlock-holmes-adventure-of-the-blanched-soldier

See also the OpenAPI description, GET /api/prompts?q=… to search, and POST /api/media-prompts to send scene media back.

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