Curses, Crones and Unspeakable Things

Caval Ignolius has just returned from traveling through a picture to a world one million miles away. He shouldn't have come back. Someone's trying to kill him, he's gotten on the bad side of a sixteen-eyed monster, and a crotchety old crone is messing with occult magic that could have deadly consequences. Oh, and there's a plot to overthrow his world. So Caval has a few problems to solve. Luckily he has help, in the form of enchanted chalk, magical pictures, and a crack team involving a hunchbacked Cyclops, an out-of-practice witch, and an illegal stowaway with an extraordinary gift.