Chess has always been the protector over his younger siblings, Emma loves math, and Finn does what Finn does best—acting silly and being adored. They’ve been a happy family, just the three of them and their mom.But everything changes when reports of three kidnapped children reach the Greystone kids, and they’re shocked by the startling similarities between themselves and these complete strangers. The other kids share their same first and middle names. They’re the same ages. They even have identical birthdays. Who, exactly, are these strangers?Before Chess, Emma, and Finn can question their mom about it, she takes off on a sudden work trip and leaves them in the care of Ms. Morales and her daughter, Natalie. But puzzling clues left behind lead to complex codes, hidden rooms, and a dangerous secret that will turn their world upside down.

    The creaky smuggler’s inn is always quiet during this season, and twelve-year-old Milo, the innkeepers’ adopted son, plans to spend his holidays relaxing. But on the first icy night of vacation, out of nowhere, the guest bell rings. Then rings again. And again. Soon Milo’s home is bursting with odd, secretive guests, each one bearing a strange story that is somehow connected to the rambling old house. As objects go missing and tempers flare, Milo and Meddy, the cook’s daughter, must decipher clues and untangle the web of deepening mysteries to discover the truth about Greenglass House—and themselves.

    So when she happens upon a crazed woman at the river threatening to throw a book into the water, Ollie doesn't think—she just acts, stealing the book and running away. As she begins to read the slender volume, Ollie discovers a chilling story about a girl named Beth, the two brothers who both loved her, and a peculiar deal made with "the smiling man," a sinister specter who grants your most tightly held wish, but only for the ultimate price. Ollie is captivated by the tale until her school trip the next day to Smoke Hollow, a local farm with a haunting history all its own. There she stumbles upon the graves of the very people she's been reading about. Could it be the story about the smiling man is true? Ollie doesn't have too long to think about the answer to that. On the way home, the school bus breaks down, sending their teacher back to the farm for help. But the strange bus driver has some advice for the kids left behind in his care: "Best get moving. At nightfall they'll come for the rest of you." Nightfall is, indeed, fast descending when Ollie's previously broken digital wristwatch, a keepsake reminder of better times, begins a startling countdown and delivers a terrifying message: RUN. Only Ollie and two of her classmates heed the bus driver's warning. As the trio head out into the woods--bordered by a field of scarecrows that seem to be watching them--the bus driver has just one final piece of advice for Ollie and her friends: "Avoid large places. Keep to small." And with that, a deliciously creepy and hair-raising adventure begins.

    Upon arrival, Elizabeth quickly discovers that Winterhouse has many charms―most notably its massive library. It’s not long before she locates a magical book of puzzles that will unlock a mystery involving Norbridge and his sinister family. But the deeper she delves into the hotel’s secrets, the more Elizabeth starts to realize that she is somehow connected to Winterhouse. As fate would have it, Elizabeth is the only person who can break the hotel’s curse and solve the mystery. But will it be at the cost of losing the people she has come to care for, and even Winterhouse itself?Mystery, adventure, and beautiful writing combine in this exciting debut richly set in a hotel full of secrets.

    At first he is thrilled with his new treasure, but as one secret leads to another, Reuben finds himself torn between his innately honest nature and the lure to be a hero.Now he is on a dangerous adventure--full of curious characters, treacherous traps, and hairsbreadth escapes--as he races to solve the mystery before it is too late. Even with fearless Penny, mighty Jack, and the wise Mrs. Genevieve on his side, can Reuben outwit and outmaneuver the sly villain called The Smoke and his devious defenders the Directions and save the city from a terrible fate?In this ingeniously crafted novel, acclaimed New York Times bestselling author Trenton Lee Stewart invites readers to join the adventure, decipher the clues, and ask themselves the question: Is knowing a secret a gift or a curse?

    A found cipher. A game begins . . . .Twelve-year-old Emily is on the move again. Her family is relocating to San Francisco, home of her literary idol: Garrison Griswold, creator of the online sensation Book Scavenger, a game where books are hidden all over the country and clues to find them are revealed through puzzles. But Emily soon learns that Griswold has been attacked and is in a coma, and no one knows anything about the epic new game he had been poised to launch. Then Emily and her new friend James discover an odd book, which they come to believe is from Griswold and leads to a valuable prize. But there are others on the hunt for this book, and Emily and James must race to solve the puzzles Griswold left behind before Griswold's attackers make them their next target.

    She doesn't have a friend in the world, except her pet mouse, Pemberley, with whom she shares her dingy attic bedroom.Then, on the heels of a rather devastating announcement made by her mother and father, Tabitha receives a mysterious invitation to the country estate of the wealthy but reclusive Countess of Windermere, whose mansion is rumored to be haunted. There, she finds herself among five other children, none of them sure why they've been summoned. But soon, a very big secret will be revealed— a secret that will change their lives forever and put Tabitha’s investigative skills to the test.

    She recently broke into the New York City foster care system to expose her foster parents as cheats and lawbreakers. However, instead of being hailed as a hero, Sara finds herself facing years in a juvenile detention facility and banned from using computers for the same stretch of time. Enter Mother, a British spy who not only gets Sara released from jail but also offers her a chance to make a home for herself within a secret MI6 agency. Operating out of a base in Scotland, the City Spies are five kids from various parts of the world. When they’re not attending the local boarding school, they’re honing their unique skills, such as sleight of hand, breaking and entering, observation, and explosives. All of these allow them to go places in the world of espionage where adults can’t. Before she knows what she’s doing, Sarah is heading to Paris for an international youth summit, hacking into a rival school’s computer to prevent them from winning a million euros, dangling thirty feet off the side of a building, and trying to stop a villain…all while navigating the complex dynamics of her new team. No one said saving the world was easy…

    It's Alfie McQuinn, the notorious cat burglar, and he's dying. As sirens wail in the distance, Alfie manages to get out two last words to his young son, March: "Find jewels."But March learns that his father is not talking about a stash of loot. He's talking about Jules, the twin sister March never knew he had. No sooner than the two find each other, they're picked up by the police and sent to the world's worst orphanage. It's not prison, but it feels like it.March and Jules have no intention of staying put. They know their father's business inside and out, and they're tired of being pushed around. Just one good heist, and they'll live the life of riches and freedom most kids only dream about.Watch out! There are wild kids on the loose and a crime spree coming . . .

    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.

    But right before she leaves, a mysterious box arrives full of medallions and a note reading: These belonged to your father. Just as she's settling into life at Wellsworth, Emmy begins to find the strange symbols from the medallions etched into the walls and stumbles upon the school's super-secret society, The Order of Black Hollow Lane. As Emmy and her friends delve deeper into the mysteries of The Order, she can't help but wonder—did this secret society have something to do with her dad's disappearance?

    As the stakes continue to rise, the boy must piece together the disjointed clues of his origins while using his limited knowledge to stop one of the greatest art frauds ever attempted. Digitally interactive, this museum mystery offers QR codes woven throughout the book that bring renowned paintings to readers’ fingertips.

    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.

    Especially not when darkness falls and the wind howls around Maw Rocks and the wreck of the battleship Leviathan, where even now some swear they have seen the unctuous malamander creep…Herbert Lemon, Lost-and-Founder at the Grand Nautilus Hotel, knows that returning lost things to their rightful owners is not easy – especially when the lost thing is not a thing at all, but a girl. No one knows what happened to Violet Parma’s parents twelve years ago, and when she engages Herbie to help her find them, the pair discover that their disappearance might have something to do with the legendary sea-monster, the Malamander. Eerie-on-Sea has always been a mysteriously chilling place, where strange stories seem to wash up. And it just got stranger...

    Basil E. Frankweiler meets Chasing Vermeer in this clever middle-grade debut.When Theodora Tenpenny spills a bottle of rubbing alcohol on her late grandfather’s painting, she discovers what seems to be an old Renaissance masterpiece underneath. That’s great news for Theo, who’s struggling to hang onto her family’s two-hundred-year-old townhouse and support her unstable mother on her grandfather’s legacy of $463. There’s just one problem: Theo’s grandfather was a security guard at the Metropolitan Museum of Art, and she worries the painting may be stolen.With the help of some unusual new friends, Theo’s search for answers takes her all around Manhattan, and introduces her to a side of the city—and her grandfather—that she never knew. To solve the mystery, she’ll have to abandon her hard-won self-reliance and build a community, one serendipitous friendship at a time.