It is one of the few materials produced for the ill-fated d20 version of the game, although it was first published for the standard CoC rules.
Fantasy Flight Games published the Nocturnum trilogy of adventures over a span of three years as Long Shades (1997), Hollow Winds (1998) and Deep Secrets (1999).
At the hotel, a woman named Cynthia Carmichael has been killed in her room, seemingly by a wild animal.
In reality, Carmichael was killed by a werewolf named Ian McGuire, a slave to a Wilder Shk'ryth who plans to destroy the human race.
He had been imprisoned in a nearby mountain for centuries by a local Native American tribe that had been performing a ritual to keep him trapped.