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.

Ten-year-old Leo's future and the fate of the extraordinary Whippet Hotel, where his father is the maintenance man, are at stake when a series of cryptic boxes leads Leo to hidden floors, strange puzzles, and unexpected alliances.

Someone is trying to put Aunt Jane's motel out of business, but the Alden children aren't going to let that happen.

Recent immigrants from China and desperate for work and money, ten-year-old Mia Tang's parents take a job managing a rundown motel in Southern California, even though the owner, Mr. Yao is a nasty skinflint who exploits them; while her mother (who was an engineer in China) does the cleaning, Mia works the front desk and tries to cope with demanding customers and other recent immigrants--not to mention being only one of two Chinese in her fifth grade...

"Twelve-year-old Milo is stuck spending the winter holidays in a house full of strange guests who are not what they seem-again! He will have to work with friends old and new to uncover clues in search of a mysterious map and a famous smuggler's lost haul"--

Leo and Remi have gotten used to the strangeness of the Whippet Hotel, but when the entire top floor is hoisted into the sky and transported to the field of wacky inventions, they find that they must compete against a number of foes to solve a puzzle or lose their beloved hotel forever.

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

"Something's lurking beneath the famous staircase at The Jefferson, Richmond's historic downtown hotel. Back in 1895, when the hotel opened, real alligators roamed free in the courtyard fountains. That was ages ago--or was it? When young brothers Sam and Derek arrive at The Jefferson for an elegant wedding weekend with their parents, they love exploring the old hotel. But when the wedding rings go missing and Sam is blamed, the boys and their friends...

At the Castellana Hilton in 1957 Madrid, eighteen-year-old Daniel Matheson connects with Ana Moreno through photography and fate as Daniel discovers the incredibly dark side of the city under Generalissimo Franco's rule.

"Ever since her dad died, 11-year-old Jerry Blum and her mom have bounced around dead-end towns, staying in a series of rundown motels where her mother picks up housekeeping work and Jerry can get around in her wheelchair. But the Slumbering Giant motel is different. Lights blink on and off in the surrounding trees, a mysterious radio station plays only at midnight, and people disappear into the woods, never to been seen again. Not to mention that...