In their magic treehouse, Jack and Annie are again transported to King Arthur's realm, where invisible beings, giant ravens, and mistaken magic spells have a duke's castle in an uproar on Halloween night.

A gift of a toy castle, complete with silver knight, introduces William to an adventure involving magic and a personal quest.

When the dangerous ancient wizard Arkwright escapes the dungeon and goes missing within the Castle, Princess Celie must find the wizard and save her family.

Charlie and his magically gifted friends and relatives work together to rescue Billy Raven, a young orphan, from a mysterious and dangerous couple who have adopted him.

When Sand, a blacksmith's apprentice, wakes up in a broken castle, he must find a way to put it back together.

Ibb, curious about the lone castle in her town, forms a long-distant friendship with the guard and, despite warnings there is something fearful inside, accepts his invitation to enter.

Eleven-year-old Princess Celie lives with her parents, the king and queen, and her brothers and sister at Castle Glower, which adds rooms or stairways or secret passageways most every Tuesday, and when the king and queen are ambushed while travelling, it is up to Celie--the castle's favorite--with her secret knowledge of its never-ending twists and turns, to protect their home and save their kingdom.

As a page in his uncle's castle in thirteenth-century England, eleven-year-old Tobias records in his journal his experiences learning how to hunt, play games of skill, and behave in noble society. Includes notes on noblemen, castles, and feudalism.

In 1409, aspiring knight Roland Wright joins the royal household at Twofold Castle as a new page, but his plan to impress King John and his knights quickly backfires.

Roland, a scrawny, aspiring knight prone to hiccups, serving as a page in Twofold Castle, attends his first tournament, where knights from near and far take part in a full day of jousting.