The Circle Undone is a deluxe expansion for Arkham Horror: The Card Game. This expansion marks the beginning of the fourth cycle and introduces a team of new investigators, a fully playable prologue, and two brand-new scenarios. Players will dive into the mysteries of the Silver Twilight Lodge and face fast-paced gameplay that throws them into the action of their investigation into Arkham's underbelly. Note that this is not a standalone product; a copy of the Arkham Horror: The Card Game Core Set is required to play.