This is the first Italian edition, published in 1969, of "Cluedo" ("Clue" in USA). The title of this Italian published game translates in English to "Open Investigation". In this game, players have the chance to be the hero. Players enter the house of Mr. Black in order to solve a variety of mysteries and crimes. Players gather evidence, follow tracks, and draw assumptions to discover the scheme. The crafty detective will discover who is the guilty party.