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 two orphans break through the magic shield that is keeping an extraordinary family of monsters safe from those who would do them harm, they are all put in grave danger.

Eleven-and-a-half-year-old Valentina Salazar grew up as a monster protector until her father's loss, but when a video of a mythical egg appears, Valentina convinces her older brother and sister to help her find and save it--all while avoiding the monster hunters who want to destroy it.

"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"--

"A pair of tween vampires hide their true nature from the humans in their town"--

When eleven-year-old Sylvie joins a monster LARPing (a.k.a. live action role-play) summer camp, she finds herself in the performance of her life after realizing that she is the only human among real monsters.

Princess Magnolia is having hot chocolate and scones with Duchess Wigtower when ... Brring! Brring! The monster alarm! A big blue monster is threatening the goats! Stopping monsters is no job for dainty Princess Magnolia. But luckily Princess Magnolia has a secret -- she's also the Princess in Black, and stopping monsters is the perfect job for her! Can the princess sneak away, transform into her alter ego, and defeat the monster before the nosy duchess...

Meet Monster. Meet Judy. Two humans who don't like each other much, but together must fight dragons, fire-breathing felines, trolls, Inuit walrus dogs, and a crazy cat lady — for the future of the universe.
Monster runs a pest control agency. He's overworked and has domestic troubles — like having the girlfriend from hell.
Judy works the night shift at the local Food Plus Mart. Not the most glamorous life, but Judy is happy. No one...

Lou has spent her whole life running. Now, after a crushing blow from Morgane, the time has come to go home--and claim what is rightfully hers. But this is no longer the Lou her friends knew. No longer the Lou who captured a chasseur's heart. A darkness has settled over her, and this time it will take more than love to drive it out.

When demonic cheerleaders invade his high school, Percy Jackson hurries to Camp Half Blood, from whence he and his demigod friends set out on a quest through the Labyrinth, while the war between the Olympians and the evil Titan lord Kronos draws near.