Invisible Lie Detector by Wayne Dobson & Alan Wong - TrickThe Invisible Lie Detector is the latest in Wayne Dobson's output of quick, powerful, simple close up mental routines. Eight cards bearing the names of everyday objects. One is freely chosen under the fairest conditions Byplay involving an 'Invisible lie Detector' and the spectator lying about his or her chosen object to try and put you off the scent. The performer has the matching object in his closed hand Super simple and a lot of fun to perform