From the back of the book: Masters of the Mind Adventurers speak of a rare breed of heroes who can bend the laws of nature to their bidding through sheer force of will. This mental manipulation is not magical, nor is it the stuff of superstitious gossip. It is the art of psionics. This supplement for the D&D(r) game provides psionic character classes and prestige classes, psionic skills and feats, a psionic combat system, and a plethora of psionic powers, itmes, and monsters -- everything you need to include psionics in your campaign. Expanded by; More Psionic Monsters