Sage Alexander and the Hall of Nightmares
(Book)

"The world is darker than it seems. Demons, vicious half-humans and evil creatures of myth and legend prowl the earth, unseen to human eyes but not to the eyes of 14-year-old Sage Alexander. Descended from humans and angels, Sage has the power to see and fight all these creatures, and in fact he must. The human race is in danger, controlled unknowingly by the Seven Princes of Hell, the seven deadly sins. Greed, Sloth, Envy, Gluttony, Lust, Wrath and Pride all breathe their sin into weaker human ears and take those willing souls for their own, as they have for centuries. And now Mammon, Greed incarnate, has possessed Sage's father and threatens to keep him forever. The Angelic Response Council, a committee of angels, archangels, guardians and half-angelic humans, has fought the forces of blackest evil for centuries, but their numbers are dwindling. There is prophecy of a gifted warrior, who will come in the Council's darkest hour to bring about the demise of the fallen angels cast out from heaven and all of their nefarious descendants. His name will be Sage Alexander. Sage must face danger and death as he assembles a supernatural team and battles his way through time and Godspace in order to save his family from the grips of Greed. But he has an even bigger quest ahead of him. ... This is only the beginning." -- Amazon.com