Of all the cities found in H.P. Lovecraft's vision of Massachusetts, perhaps none is quite so deadly as the small fishing village of Innsmouth. Decrepit and dying, Innsmouth is being consumed from within by an ancient pact once made to save the town. Innsmouth Horror introduces several new game concepts to the Arkham Horror board game, including 16 new investigators (each with Personal Stories unique to each investigator), eight new Ancient Ones complete with Epic Battle cards, two new Heralds, over 30 new monster markers, plenty of new encounters, and an expansion board featuring the town of Innsmouth.