Eldest of three sisters in a land where it is considered to be a misfortune, Sophie is resigned to her fate as a hat shop apprentice until a witch turns her into an old woman and she finds herself in the castle of the greatly feared wizard Howl.

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.

Moving to a Scottish castle allows seventh-grader Callie to escape friendship problems in San Diego, but finding new friends, even in the birding club an old journal inspires her to join, proves challenging.

"Castle Glower's towers have transported Princess Celie, her siblings, and her pet griffin, Rufus, to an unknown land. As they set out on a dangerous adventure to discover their whereabouts, they find an entire lost people, divided by the wishes of two wizards in a centuries-old quarrel over their beloved home--Castle Glower"--

Nancy gets involved in mystery when she receives a valuable moonstone from an unknown person.

While visiting an old castle in England, Samantha and Nellie solve mysteries involving a ghost and some missing rare books.

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.

Trapped in a castle tower on the morning of Princess Eliza's marriage, bridesmaids Angelina and Princess Sophie hope they will be rescued in time for the wedding processional.

"Princess Imogen of Goslind has lived a sheltered life for three years at the boarded-up castle--she and the rest of its inhabitants safe from the bloody mori roja plague that's ravaged the kingdom. But Princess Imogen has a secret, and as King Stuart descends further into madness, it's at great risk of being revealed. Rations dwindle each day, and unhappy murmurings threaten to crack the facade of the years-long charade being played within the castle...