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.

An illustrated, interactive story with a narrator who invites the reader to meet a vast array of pet monsters, such as the Yucky Mucky twins, and choose one to take home.

Tom and Elenna journey into the Dark Realm to free the good beasts of Avantia who have been captured by the evil wizard Malvel.

Tom must face the Winged Flame, a phoenix living inside a volcano, to finish his quest to save the kingdom from the dark wizard Malvel, but during the fight he learns about his mysterious past and what it means for his future.

Picking up after Quint and Dirk's Hero Quest, the Last Kids are happily reunited--but quickly faced with a monstrous new mission. Inside an other-dimensional fortress, the evil Thrull, alongside a vile new villain, is carrying out a sinister plan. Jack, Quint, June and Dirk must make their own plans to infiltrate the stronghold before Thrull gets any closer to completing the mysterious Tower, a structure that could ultimately spell doom for this dimension....

A ravenous monster eats everything in its path.

In the perilous Black Ocean lurks Narga the Sea Monster. As well as preying on the rebels and fighting evil wizard Malvel, Narga is holding one of the good Beasts of Avantia captive. Can Tom set the good Beast free, or will it remain trapped in the Dark Realm for ever?

When animals mysteriously stampede and brush fires sweep the prairie, Tom and Elenna, who hear that a mysterious horseman is causing the damage, speed to the plains in an effort to stop Tagus the Night Horse.

When Billy's Christmas present of a Mogwai named Gizmo accidentally gets wet and his babies eat after midnight, devilish gremlins take over the town.

When trouble raises its blue monster head, Princess Magnolia ditches her flouncy dresses and becomes the Princess in Black!