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.

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.

When Geronimo is invited to Creepella von Cacklefur's spooky castle, he is surrounded by the gloom of the castle as well as by Creepella's creepy family!

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.

"Kiki the engineering explorer and Gustavo the history expert get caught up in a spooky adventure when a ghostly figure shows up at a castle before a big tournament"--Provided by publisher.

"The Aldens visit Ireland and stay in a beautiful castle that's now a hotel. But at night they see a mysterious figure who walks with a lantern, and think it could be one of the legendary banshees"--

There are things that go bump in the night, even in the well-protected royal palace of Wrenly. Mysterious happenings have set Prince Lucas and his dragon, Ruskin, on edge. Curtains sway next to closed windows, temperatures drop for no reason, and strange lights glow in empty rooms. Lucas and Clara are sure there is a ghost haunting the castle halls. But will they find the ghost before the ghost finds them? -- from Amazon.

Miss Mallard is travelling to Scotland's Duckinbill Castle for a family reunion. During the reading of a will, family members vanish one by one. Is the ghost of Count Kisscula behind the disappearances? -- from Amazon.

Twelve-year-old William uses the magic token to return, through the toy castle in his attic, to the medieval land of Sir Simon, which is now menaced by a skeleton ship bearing a plague of ravenous rats.

Young mouse Calib Christopher dreams of becoming a Knight of the Round Table. For generations, his family has led the mice who live just out of sight of the humans, defending Camelot from enemies both big and small. But when Calib and his friend Cecily discover that a new threat is gathering&#x;one that could catch even the Two-Leggers unaware&#x;it is up to them to unmask the real enemy, unite their forces, and save the castle they all call home....