Graham also wrote a series of four scenarios for Purist mode Trail of Cthulhu, which are rather good and well worth a look. They show earlier iterations of a lot of the thinking that is evident in Dark. One note to make: several of them lean into the traditional lovecraftian trope that rurality is the antithesis of civilisation in an uncomfortable way. I’m very pleased that Cthulhu Dark goes very much against this approach.

Pelgrane Press publish them as The Final Revelation.