The S.M.A.R.T.S. can't wait for the local high school's Art of Science exhibition, which will feature student artwork made through scientific methods. It's sure to be a great show, except for one problem -- the centerpiece necklace has vanished The S.M.A.R.T.S are stumped. There's no sign of a break-in, and the door to the gallery was locked. Could the jewelry really just disappear? It's up to the S.M.A.R.T.S. to solve the impossible crime. Using...