The GUMSHOE rules system is a new rpg which revolutionizes investigative scenarios by ensuring that players are never deprived of the crucial clues they need to move the story forward. Adventure creation is a core component of the system. GUMSHOE was written by Robin D Laws, creator of the Dying Earth, and the first release incorporating the rule set was The Esoterrorists, followed by Fear Itself. Other new projects using the GUMSHOE system, including Mutant City Blues and a adaptation of Call of Cthulhu by Kenneth Hite called Trail of Cthulhu.