From publisher blurb:
In this series, Kenneth Hite looks at the creatures, species, and monsters of the Cthulhu Mythos from every non-Euclidean angle. Alternate versions and new explanations provide the same jolt of mythic bisociation that the gods and titans receive in the TRAIL OF CTHULHU corebook. Hite traces these foul things through their legendary history, and provides further clues for any Investigator to follow. Horrific scenario seeds burst and bloom, story spines protrude and deform, in a blasphemous garden any Keeper can harvest.
You’ve done worse things, but you’ve never done anything as dangerous as angering the Earps. Because now they’re coming to kill you. And they can’t be killed. Not permanent, anyhow. A survival-horror frame for Fear Itself set in the worst and weirdest West.