Fear the Fantastic
As Christopher and his friends continue to survive in Everworld until they can find a way back to their own world, they find themselves witnessing the Hetwans preparing to defeat Greek lands and battling the repulsive and dangerous Ka Anor, who is planning to invade Mount Olympus.
K. A. Applegate
Katherine Alice Applegate (born 1956) is an American author. Applegate's most popular books are science fiction, fantasy, and adventure novels. She has won the Best New Children's Book Series Award in 1997 in Publishers Weekly.
She also writes books for young readers as Katherine Applegate.
Everworld
Everworld consists of twelve books. The current recommended reading order for the series is provided below.