This is not a standalone product. A copy of Arkham Horror: The Card Game Core Set is required to play. You swore that you would never go back. Yet like a snake eating its own tail, you were always meant to return to where it all began. In the Arkham Horror: The Card Game Core Set, Night of the Zealot presented your first challenge while introducing you to the investigators, mechanics, and environment of Arkham Horror Files, providing a stable foundation from which you built you investigations into the unknown and the unknowable. Now, you are invited to return home and begin a new challenge worthy of your expertise.