Spending Christmas break at Winterhouse Hotel, eleven year-old Elizabeth discovers that she has magic and finds that her love of puzzles helps her solve a mystery.

At Greenglass House, the innkeepers' adopted son Milo plans to spend his winter holidays relaxing, but soon guests are arriving with strange stories about the house, sending Milo and Meddy, the cook's daughter, on an adventure.

A reckless young mouse named Ralph makes friends with a boy in room 215 of the Mountain View Inn and discovers the joys of motorcycling .

When Charlie Hitchcock, the smartest kid at school, gets a note from the school bully, Tyler Yu, demanding a meeting, he fears the worst--but it turns out that Tyler wants him to solve the mystery of the missing magician at the Abracadabra Hotel.

Tyler Yu, school bully, is convinced that there is a ghost stealing things at Abracadabra Hotel, and he enlists the help of Charlie Hitchcock to solve the mystery.

Back at the Winterhouse Hotel, Elizabeth and Freddy dig deeper into the mystery surrounding Riley S. Granger, a hotel guest who left behind odd artifacts, including a magical book that the evil Gracella Winters attempted to use to gain destructive power over the entire Falls lineage. The two friends follow a trail of clues, inadvertently attracting the attention of a suspicious new hotel guest: Elana Vesper. The clock is licking as Elizabeth and Freddy...

P.T. and Gloria need a great plan to ensure the Wonderland can beat a slick new attraction in the "Fun In The Sun" contest.

Spring is here and the animal staff at the Heartwood Hotel are busy arranging a series of festivals and competitions to drum up business and to show its patrons that Heartwood is the greatest hotel in Fernwood Forest.

While staying at a hotel in New York City, the Aldens investigate a series of annoying pranks plaguing the management and guests

When Tom and Sandy visit the Apogee, the world's first space hotel, Tom begins to notice strange happenings and when the billionaire guest of the hotel goes missing, Tom suspects foul play.