“…and talked with undying leaders of the cult in the mountains of China…”
It occurred to me that this period and location might make an interesting sandbox for investigators. In retrospect, the Chinese Civil War is more complicated than one might suspect (no surprise), though I think the GM could almost make up anything they want to serve the story and likely have no player “Well, actually” them, OR be able to find some kind of supporting evidence via a web search. If it sounds fun, I say do it. Also, it gives you an excuse to relish archaic spellings like “Thibet” and “Peiping.”
Who: The factions:
- Cthulhu cultists (naturally)
- Nationalist / Republican Chinese
- Communist Chinese
- Imperial Japanese
What: Investigators are called to a mysterious monastery in the mountains of China. Perhaps an approaching army threatens a priceless collection of Buddhist scriptures? Or maybe what appears to be a humble Buddhist monastery on first glance is in reality a cover for the insidious cult of Cthulhu, pulling strings behind the scenes to make mankind “free and wild and beyond good and evil, with laws and morals thrown aside and all men shouting and killing and revelling in joy.” Or perhaps there is a Great Old One sleeping underneath the (actually legit) monastery, and the monks need help to keep it sleeping. This also allows a possible connection to various Hollow Earth tropes.
When: Since the ‘deathless Chinamen’ are apparently immortal, an adventure with this setting could be staged at any time you desire; however, the ‘golden age’ of COC and the forces involved might fit best within 1926-1941. This covers the start of the Chinese Civil War to America’s entry into WWII, after which one presumes it would be more difficult (though not impossible) to casually insert a group of Westerners. Just before and even early in WWII, American servicemen were inserted into China on their own civilian passports, via commercial flights (Pan Am) from the East coast of the US, down to South America, across to West Africa, then to Egypt, then India, and finally through Burma into China (if I recall correctly).
Where: Rural China?