The Black Prism : Book 1 of Lightbringer

The first book in the Lightbringer series, the blockbuster fantasy epic from international bestseller Brent Weeks Guile is the Prism, the most powerful man in the world. He is high priest and emperor, a man whose power, wit, and charm are all that preserves a tenuous peace. Yet Prisms never last, and Guile knows exactly how long he has left to live. When Guile discovers he has a son, born in a far kingdom after the war that put him in power, he must decide how much he's willing to pay to protect a secret that could tear his world apart. If you loved the action and adventure of the Night Angel trilogy, you will devour this incredible epic fantasy series by Brent Weeks.