Take you players into the foreboding Shadowlands with Mask of the Oni. This adventure pits heroes against the dangers of the Shadowlands and the horrors found within the crumbling walls of the Hiruma family's fallen castle.
The first in a new range of novels of eldritch adventure from the wildly popular Arkham Horror; an international thief of esoteric artifacts stumbles onto a nightmarish cult in 1920s New England.
