From the Back of the Book:
In the dangerous, fast-paced world of adventuring, knowledge means survival. In an age of legends, even the greatest heroes need technical advisors. Inside Sages & Specialists you'll find ten new NPC specialist classes--from apothecary to seer, from engineer to scribe--each with his own special talents and insights. In addition, this book contains a host of new rules that directly affect the lives of PCs everywhere. Add depth to your campaign with these unique and three-dimensional NPCs.