From publisher blurb:
The Horrors of the Mind
Malevolent Thoughts is a supplement for the 1st edition of the Pathfinder Roleplaying Game, containing over 50 pages of new psionic options for any campaign that wants to include horrific elements, including:
3 new psionic classes: the Contortionist, a metamorphic unarmed martialist, the Eccentric, a full manifester whose abilities are empowered by a taboo madness, and the Mirror, who can create a psionic double of herself known as a reflection.
5 new monsters, including the blighted Cadaver playable race, who can psychically “see” without eyes. Each monster has its own adventure hook that describes a short adventure or encounter that could be used with the monster.
A short one-shot adventure using the rules presented in this book: “The Garden of Encephalon”, a murder mystery in the monastery of a bizarre cannibal cult, for 8th level characters.
New archetypes, feats, powers, corruptions, curses, items, and fleshwarping (including 5 new fleshcrafts and fleshcraft psicrystals).