When their beloved aunt--matriarch of the world's most powerful family--dies, orphaned siblings Amy and Dan Cahill compete with less honorable Cahill descendants in a race around the world to find cryptic clues to a mysterious fortune.Book includes game cards which the reader may use to play an online version of the treasure hunt.

    For 500 years, they've protected the source of their power - the 39 Clues. And for 500 years, they've kept their secrets silent. Until now.This extraordinary stand-alone novel cracks open the Cahill vault to tell the story of the most coveted piece of artwork in the world, a masterpiece that has been the target of seven separate theft attempts: Jan van Eyck’s altarpiece at Ghent. OPERATION TRINITY chronicles the first Vesper attack on the altarpiece in the 1600s, then jumps to WWII and young Grace Cahill’s desperate bid to save the masterwork from the Nazis. The final piece of the novel tells the story of Ian and Natalie Kabra’s first solo operation and features an 11th hour appearance by Grace Cahill on her final mission.History will never be the same.

    Not only is he an orphan with an unfortunate nose, but he also has narcolepsy, a condition that gives him terrible nightmares and makes him fall asleep at the worst possible moments. Now he's being sent to a new orphanage, where he will encounter vicious bullies, selfish adults, strange circumstances – and a mystery that could change his life forever. Luckily, he does have one thing in his favor: He's a a genius.On his quest to solve the mystery, Nicholas finds enemies around every corner, but also friends in unexpected places – and discovers along the way that the greatest puzzle of all is himself.

    Then he and a new friend, Chip, who's also adopted, begin receiving mysterious letters. The first one says, "You are one of the missing." The second one says, "Beware! They're coming back to get you."Jonah, Chip, and Jonah's sister, Katherine, are plunged into a mystery that involves the FBI, a vast smuggling operation, an airplane that appeared out of nowhere - and people who seem to appear and disappear at will. The kids discover they are caught in a battle between two opposing forces that want very different things for Jonah and Chip's lives.Do Jonah and Chip have any choice in the matter? And what should they choose when both alternatives are horrifying?With Found, Margaret Peterson Haddix begins a new series that promises to be every bit as suspenseful as Among the Hidden, and proves her, once again, to be a master of the page-turner.

    Their desperate hunt for the 39 Clues lies behind some of history’s biggest enigmas – the curse of the Hope diamond, the race to summit Mt. Everest, the wild life and death of Harry Houdini. And now – finally – the secrets are out. With an introduction by Rick Riordan, The 39 Clues: The Black Book of Buried Secrets reveals the shocking truth about history’s most notorious family.In full, lush color, The 39 Clues: The Black Book of Buried Secrets lays bare each hidden fact, concealed strategy, top agent, lost founder, secret base and hushed-up scandal of the Clue hunt. This complete guide to the Cahills contains information on all five branches, including the notoriously elusive Madrigals. The must-know information includes:-Full files on the enigmatic Man in Black.-The true purpose of the Madrigal branch.-The complete story of the fire that split the original Cahill family.-The truth about the night Hope and Arthur Cahill died.-Open access to the secrets of the Lucian, Ekaterina, Tomas and Janus branches.It’s never too late to join the hunt – especially with The 39 Clues: The Black Book of Buried Secrets to provide complete access to the Cahill’s most deeply-buried secrets.http://www.scholastic.com/kids/39clues/http://www.the39clues.com/

    For five hundred years, they have guarded the 39 Clues – thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. If the serum got into the wrong hands, the disaster would rock the world. So certain Cahills have always made it their mission to keep the serum safe, buried, locked away. Until now.Thirteen-year-old Dan Cahill and his older sister, Amy, are the latest guardians of the Clues. They think they’ve done everything right, but a tiny mistake leads to catastrophe. The serum is missing and Dan and Amy have to get it back and stop who stole it . . . before it’s game over. For everyone.

    His hero, Luigi Lemoncello, the most notorious and creative gamemaker in the world, just so happens to be the genius behind the building of the new town library.Lucky Kyle wins a coveted spot to be one of the first 12 kids in the library for an overnight of fun, food, and lots and lots of games. But when morning comes, the doors remain locked. Kyle and the other winners must solve every clue and every secret puzzle to find the hidden escape route. And the stakes are very high.In this cross between Charlie and the Chocolate Factory and A Night in the Museum, Agatha Award winner Chris Grabenstein uses rib-tickling humor to create the perfect tale for his quirky characters. Old fans and new readers will become enthralled with the crafty twists and turns of this ultimate library experience.

    Before they know it, the two find themselves at the center of an international art scandal, where no one — neighbors, parents, teachers — is spared from suspicion. As Petra and Calder are drawn clue by clue into a mysterious labyrinth, they must draw on their powers of intuition, their problem-solving skills, and their knowledge of Vermeer. Can they decipher a crime that has left even the FBI baffled?

    This world is on the brink of war, and Gregor's arrival is no accident. A prophecy foretells that Gregor has a role to play in the Underland's uncertain future. Gregor wants no part of it -- until he realizes it's the only way to solve the mystery of his father's disappearance. Reluctantly, Gregor embarks on a dangerous adventure that will change both him and the Underland forever.

    or bust. Unfortunately for him, his personality doesn’t exactly scream “secret agent.” In fact, Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate math skills, Ben isn't surprised when he is recruited for a magnet school with a focus on science—but he’s entirely shocked to discover that the school is actually a front for a junior C.I.A. academy. Could the C.I.A. really want him?Actually, no. There’s been a case of mistaken identity—but that doesn’t stop Ben from trying to morph into a supercool undercover agent, the kind that always gets the girl. And through a series of hilarious misadventures, Ben realizes he might actually be a halfway decent spy…if he can survive all the attempts being made on his life!

    Now Sammy's witnessed a crime at the Heavenly Hotel-a light fingered thief stealing $4,000 from Madame Nashira, the astrologer with the fire-hazard hair-do. Thing is, while she was watching him, he was watching her, too...Fast-paced and funny, packed with menacing suspects and clever clues, the Sammy Keyes mysteries keep you guessing to the last riveting page.

    So when she finds a long-forgotten trail in the wild woods near her home, she resolves to follow it. It's a journey that leads her to unravel the dark secrets of her aunt's life - and her own. And while Zinny chases ghosts in the woods, gorgeous Jake Boone is determined to chase her . . .

    Sarcastic and bossy 13-year-old Primrose lives with her childlike, fortuneteller mother, and a framed picture is the only evidence of the father she never knew. Despite their differences, David and Primrose forge a tight yet tumultuous friendship, eventually helping each other deal with what is missing in their lives. This powerful, quirky novel about two very complicated, damaged children has much to say about friendship, loss, and recovery.

    Joseph Johnson has lost just about everyone he's ever loved. He lost his pa in an accident. He lost his ma and his little sister to sickness. And now, he's lost his pony--fast, fierce, beautiful Sarah, taken away by a man who had no right to take her.Joseph can sure enough get her back, though. The odds are stacked against him, but he isn't about to give up. He will face down deadly animals, dangerous men, and the fury of nature itself on his quest to be reunited with the only family he has left.Because Joseph Johnson may have lost just about everything; but he hasn't lost hope. And he hasn't lost the fire in his belly that says he's getting his Sarah back--no matter what.

    He wasn't wearing his seatbelt, they said. But when fourteen-year-old Alex finds his uncle's windshield riddled with bullet holes, he knows it was no accident. What he doesn't know yet is that his uncle was killed while on a top-secret mission. But he is about to, and once he does, there is no turning back. Finding himself in the middle of terrorists, Alex must outsmart the people who want him dead. The government has given him the technology, but only he can provide the courage. Should he fail, every child in England will be murdered in cold blood.