The Bell, the Book, and the Spellbinder

In The Bell, the Book, and the Spellbinder, Johnny Dixon's best friend Fergie steals an enchanted book from the library, and slowly falls under the spell of evil sorcerer Jarmyn Thanatos. In The Chessmen of Doom, Johnny and his friends must unravel the baffling riddle in Peregrine Childermass's will -- or an evil madman will unleash a force so powerful it could destroy the world!