Anyone who can believe in psychi mind-reading, spiritism, Uri Geller's spoon-bending, dowsing for water, reading auros, the efficacy of biorythyms, Erich Von Daniken's nonsense, pyramidology, and any other of a number of "supernatura" feats after reading this classic of skepticism either didn't really read it, is willfully blind, or is hopelessly duped.

Randi shows not only how psychics, spiritists, and numbers other fakes ply their disgustingly deceptive wares, but also recounts numerous incidents when Randi "put up" (He is now offering not $10,000 but $1 million.) and the then-discredited fraud refused to "shut up."