A new and baffling approach to the Lie Detector effect that is ever so easy to do. Magic at its best from Scotlands Peter Duffie. A card is selected from a shuffled deck. Four cards, blank on both sides, are shown. Another blank card with a question mark on its back is set aside. Now the fun begins. You ask questions. The spectator can either lie or tell the truth. And, one by one, the Lie Detector Cards reveal the selected card! First a big Red Square appears, then a Bunch of Numbers, then a Big Diamond, and finally a Number Eight. Was your card the 8 of Diamonds? Yes it was! In the end, the cards all return to being blank on both sides. And, when you turn over the question mark card, its face is printed with the Eight of Diamonds! Funny, commercial magic that is easy to perform. Everything you need to know is taught in the excellent instructions. Comes complete with specially printed poker size cards.