True20 Adept's Handbook

From the publisher's website:

The second in the series of sourcebooks spotlighting the three primary roles of True20 Adventure Roleplaying, the Adept's Handbook expands on the role of supernatural powers in the game, looking at alternate ways of handling them and how to customize power-sets to suit different types of adepts, from fantasy sorcerers and priests to sci-fi psionics and modern day psychics and more. It also provides expanded feats, skills, and powers for the adept role. Take your heroes and your adventures to the next level with the True20 Adept's Handbook.