Four short stories plus original art, interviews, puzzles, and games, reveal new insights into the world of Percy Jackson and the other heroes of Olympus.

A little monster has trouble falling asleep one night because he fears little boys and girls are hiding under his bed and in his closet.

Bored with her ordinary pets, a young girl chooses a monster from the pet store, but soon finds that it is more trouble than she expected.

The disappearance of the goddess Artemis while out hunting a rare, ancient monster, prompts a group of her followers to join 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.

A group of gifted middle-school students must band together to save their town, as well as a fantasy world, from monsters.

"A busy creature eats his way through the alphabet!"--

As the legend of the fearsome Ickabog spreads terror in the peaceful kingdom of Cornucopia, best friends Bert and Daisy set out to discover the truth and bring happiness back to the kingdom.

The zombies are disappearing. This might seem like a good thing, since zombies eat your brains, but normal human kid Jack Sullivan is suspicious. He keeps hearing an eerie shrieking noise that seems to be almost summoning the zombies--but to where, and for what (probably) foul purpose?