Deduction card game based on the Three Investigators stories. The 3 ??? are Jupiter, Bob and Pete (in the German version - Justus, Bob and Peter). There are 3 types each of suspect card, place card and mystery card and 3 cards which show all 9, plus 3 detective cards (Justus, Bob and Peter), 4 player pieces and the gameboard. Die drei ??? und die Spur des Raben is essentially the same game as Die drei ??? und das brennende Schwert, Die drei ??? und das leere Grab, and Die drei ??? und der Poltergeist, just with different illustrations on the cards to accomodate the story.