Artemis Fowl

Artemis Fowl is a 12-year-old genius and descendant of a long line of criminal masterminds. He soon finds himself in an epic battle against a race of powerful underground fairies who may be behind his father's disappearance.

A Babysitter's Guide to Monster Hunting

Recruited by a secret society of babysitters, a high schooler battles the Boogeyman and his monsters when they nab the boy she's watching on Halloween.