The spindlers

Liza is the only one who realizes her brother Patrick's soul has been stolen by wicked Spindlers, spider-ish creatures who live Below. Liza slips through a secret hole in the wall in her family's basement to search for her brother. She befriends a giant rat, Mirabella, who agrees to take her to the Spindlers.

Action. Adventure. Humor. Wit. This story has it all. You will love it, middle-grade readers.