To start using this expansion, simply add the new cards and components to your existing Arkham Horror: The Card Game set. Choose one of the five new investigators and begin exploring the spooky city of Innsmouth. When playing, pay close attention to the new mechanics as they can change the way you approach the game. After each play, make sure to keep the cards in a cool, dry place to prevent damage. Don't bend or crease the cards, and handle them gently to ensure they last a long time. Have fun uncovering the secrets of Innsmouth!