While Coryn and his companions journey to a wintery realm where mysterious owls live, the king becomes the target of an assassination plot and it is up to Primrose and Eglantine to save him.

"The last kids may have escaped the forbidden fortress by the skin of their teeth, but there isn't much to celebrate. Thrull has what he needs to complete the Tower, Rezzoch will most certainly come to Earth, and the world as they know it will cease to exist. Except Jack's Cosmic Hand is now even more powerful than he realized, and it might just be able to stop the inevitable from happening. To get the answers he seeks, he'll need to travel farther...

Penelope has always been different from other children. Her hair has been gray since she was born. It rains every year on her birthday. And she knows what her mother is going to say before the words even come out of her mouth. But one day, Penelope wakes up with sparkling red hair and her mother confesses the truth: Her father is not only still alive, he's a wizard! Penelope has inherited his powers, and must embark on a journey to find him.

Byx is the youngest member of her dairne pack. Believed to possess remarkable abilities, her mythical doglike species has been hunted to near extinction in the war-torn kingdom of Nedarra. After her pack is hunted down and killed, Byx fears she may be the last of her species. The Endling. So Byx sets out to find safe haven, and to see if the legends of other hidden dairnes are true. Along the way, she meets new allies--animals and humans alike--who...

Cat is finally living a life of luxury--and is so bored she's going out of her mind. But then she and her friends are kidnapped and forced to work on a ship bound for the New World. With a mystery to solve and survival at stake, Cat must use her wits to save herself and her friends.

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....

When the guardians of the Copernicus legacy are targeted for assassination by the evil Galina Krause, Wade, Darrell, Lily, and Becca must find the remaining relics to defeat their enemies.

Recounts the adventures of Mibs Beaumont, whose thirteenth birthday has revealed her "savvy"--a magical power unique to each member of her family--just as her father is injured in a terrible accident.

Geth and Clover seek adventure near the borders of Foo and discover a new civilization that needs their aid.

As Wade, Darrell, Lily, and Becca continue their search for an ancient relic, Wade's mother is kidnapped by Galina Krause, leader of the present-day Teutonic Knights.