Leo and Remi have gotten used to the strangeness of the Whippet Hotel, but when the top floor is 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 hotel forever.
Alexa Daley and her friend Yipes find themselves stranded on in a strange secret community known as the Five Stone Pillars, where each pillar contains it's own secrets, and twelve-year-old Alexa must fight to defeat the darkness.
Ten-year-old Harold, the adopted son of a food inventor, discovers that his father's latest invention, soda pop that produces the world's longest burps, also generates furry creatures known as Fizzies.
"The Voyagers land on a planet made entirely of water where they must find the third element of the Source that will save the Earth"--Provided by publisher.
Leo has explored the Whippet Hotel from top to bottom, discovering trains, flying goats, and mazes, and when he learns the secret beneath the hotel, a new adventure will begin.
Ryan and Sarah's continued investigation into the chilling goings-on in Skeleton Creek lead them to the cemetery and a haunted room, where they uncover a terrifying secret.
Although housebound following an eerie accident, teenaged Ryan continues to investigate the strange occurrences in his hometown of Skeleton Creek, recording his findings in a journal and viewing email video clips sent by fellow detective Sarah.
When she finds the key to a secret passageway leading out of the walled city of Bridewell, twelve-year-old Alexa realizes her lifelong wish to explore the mysterious forests and mountains that lie beyond the wall.
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.
