GUMSHOE is a system for designing and playing investigative roleplaying games and adventures, emulating stories where investigators uncover a series of clues, and interpret them to solve a mystery.
In a GUMSHOE game, the player characters discover something which triggers their investigation, and then the Game Moderator (GM) narrates them through a number of scenes, during which they use their Investigative Abilities to gather the core clues they need to move the narrative forward. They must then put the clues together to uncover the secrets behind the mystery.
