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.

Including the original Eloise and a new, color Eloise scrapbook with rare photos & drawings from the files of Hilary Knight; scrapbook written by Marie Brenner and colorful comments by Me, Eloise.

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

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.

While visiting Aunt Molly at a fancy downtown hotel, Cam uses her photographic memory to help one of the guests find her stolen luggage and pet cat, and to catch the thief.

Eloise and Weenie dress up as pirates and search for treasure.

Eloise discovers the Plaza Hotel's Lost and Found and decides to make it her secret play room.

Mabel lives with her parents in The Mermaid Hotel, by the sea. Mabel likes to keep an eye on the comings and goings of all the guests. Then one day a particularly in-ter-est-ing old lady comes to stay. There is something very suspicious about her, with her growly voice and her heavy trunks and her beady-eyed tortoise. And why does no one know her REAL name? There can only be one answer, Mabel decides, this guest is a supervillain. But even supervillains...