Little Billy enters the Forest of Sin and meets the Minpins, matchstick-sized people who live in tree cities besieged by the Smoke-Belching Gruncher whom Billy vows to destroy.

When the goddess Artemis disappears while hunting a rare, ancient monster, a group of her followers joins Percy and his friends in an attempt to find and rescue her before the winter solstice, when her influence is needed to sway the Olympian Council regarding the war with the Titans.

When children start disappearing, nobody looks for the children because nobody can remember them, except Levi and Kat, and now they must figure out what terrible presence is taking the children and fight it to save the missing kids, before the whole towndisappears.

Kate, Michael, and Emma have passed from one orphanage to another in the ten years since their parents disappeared to protect them, but now they learn that they have special powers, a prophesied quest to find a magical book, and a fearsome enemy.

Returning to Maine after years at boarding school, Eleanor Zarrin barely remembers her monstrous family, but she sets off a series of events that could destroy them all.

A young boy who spends most of his time alone in his bedroom makes new friends after the monster in his drawing becomes a monstrous nuisance.

"After a monster apocalypse hits town, average thirteen-year-old Jack Sullivan builds a team of friends to help slay the eerily intelligent monster known as Blarg"--

When her first two attempts to help a monster with his embarassing problem go awry, Zoey and Sassafras will have to find a solution quick if Gorp is to make it to the annual monster ball.

On his first day at a new school, Norm, a regular boy, has trouble fitting in with his monstrous classmates.