Patrick Carman

"A strange telegram lures fourteen-year-old Amy Cahill and her younger brother, Dan, deep into Russia and away from the only trustworthy adult they know. Signed with the initials NRR, the telegram launches a race to uncover a treasure stolen by the Nazis and the truth behind the murder of the last Russian royal family. All too soon, the treasure hunt starts to smell like a Lucian trap. But the bait might just be irresistible--what will Amy and Dan...

"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"--

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.

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.

"Leo has explored the zany, wonderful Whippet Hotel from basement to top floor, with trains, flying goats, and mazes (among other things) in between. But even Leo doesn't know every secret of the Whippet - and when he discovers that there's more beneath the hotel than he'd thought, it doesn't take long for more adventures to unfold!"--Dust jacket.

In the year 2051, when most Americans live in one of two gigantic, modern States, Faith Daniels, part of a dwindling group that lives between, learns that she, like other misfits, has unusual abilities that could help when the inevitable war begins.

After the destruction of the planet Atherton, Edgar must journey to a dark and damaged world named Earth in order to find the secrets of his civilization's past.

Teens Faith and Dylan finally go head-to-head with the mastermind behind their "pulses"

"Sarah and Ryan are in deep trouble...they've discovered a dark secret ... something that everyone in their hometown of Skeleton Creek, Oregon, seems to want to keep from them. Why? It just doesn't make sense. The answers are at the old, abandoned dredge. The last time the two teenage detectives went out to the creepy dredge, Ryan ended up unconscious and in a cast at the hospital. Ryan is stuck at home, but Sarah can continue to solve the mystery...