Steve Alton
These are the books by Steve Alton that are reviewed on this site:
The Malifex
Merlin lies under a stone enchanted, waiting for another great hero to rise up and fight the powers of darkness with him. But when he awakes from the enchantment, it isn't Merlin at all, just Merlin's apprentice, and nor is there a great hero to fight the powers of darkness - just Sam, and his friend Charly.