An audio-only game (no board or other pieces) in the MindTrap series. Players listen to one of the eighty short mysteries on the two tapes, then rewind it and listen again for more clues. After discussing the solution among themselves, one person checks the answer book. If they are correct, congratulations! If not, the rest of the group asks questions of the reader, who answers "Yes", "No", or "Irrelevant" until they guess the answer or everyone gives up.