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.

"For more than 700 years, the vast, rambling Trelawney Castle in Cornwall--turrets, follies, a room for every day of the year, four miles of corridors and 500,000 acres--was the magnificent and grand "three dimensional calling card" of the Earls of Trelawney. By 2008, it is in a complete state of ruin due to the dulled ambition and the financial ineptitude of the twenty-four earls, two world wars, the Wall Street crash, and inheritance taxes. Still:...

"Abbi, Lydia, and Daniel love to watch bats fly around their neighborhood after sunset. Nature is so cool! But then they hear an unnatural sound in Abbi's home! Is it a ghost? Or something scarier? With help from her trusty dog, Barkley, Abbi and her friends will shine a light on the truth!"--

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.

Olia lives with her parents in an old crumbling castle, filled with hidden turrets and secret doorways. When she follows a mysterious cat to one of the castle's roof domes, she finds herself stepping through one such doorway into a magical land filled with wonders... But everything is not quite as it seems: the land is under threat from a scheming magician, Chernmor, and the magic is fading away. With the help of an enchanted band of new friends,...

"Describes medieval times and the uses of medieval castles, how they were built, and who lived in them"--Provided by publisher.