Gavin 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. With over one million copies sold, Brent Weeks has become one of the fastest selling new fantasy authors of all time. THE BLACK PRISM begins a brand new action-packed tale of magic and adventure.