1. Read the case (it's identical for both teams). 2. Pose the mystery (it has two parts - you'll get clues that gradually reveal your half, the other team gets clues for its half on the back of the card).3. Reveal one clue, then ask a question (be careful, don't let your questions reveal what you know).4. Continue to reveal clues and ask questions until one team dares to solve the mystery.5. If your team solves the mystery you score a point, but if you're wrong, the other team scores.