The Esoterrorists Core Rulebook (2e)
You are elite investigators combating the plots of the Esoterrorists¸ a loose affiliation of occult terrorists intent on tearing the fabric of the world. The Esoterrorists introduces the GUMSHOE rules system¸ which revolutionizes investigative scenarios by ensuring that players are never deprived of the crucial clues they need to move the story forward.