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When Cam and Eric go on a field trip to the museum with their fifth grade class, Cam - with her photographic memory - makes an interesting discovery: dinosaur bones are missing from one of the exhibits. When no one believes them, they decide to catch the thieves themselves. As they stake out the library, a mysterious milk truck stops by. Cam knows something is wrong. The logo on the truck does not match the logo on the milk carton they drank from at lunch. The game is afoot! Will they find the missing dinosaur bones when they follow the truck to a neighborhood house?

Following the shocking events of Never Say Die, Alex Rider's world has changed: his biggest enemy, the evil organization Scorpia, has been destroyed. Alex is hoping his life can finally go back to normal, that he can go to school and spend time with his friends - but very quickly everything changes. A new and dangerous criminal organisation - Nightshade - is rising.

Who is Geronimo Stilton? That's me! I run a newspaper, but my true passion is writing adventure stories. Here in New Mouse City, the capital of Mouse Island, my books are all best sellers! My stories are funny, fa-mouse-ly funny. They are whisker-licking-good tales, and that's a promise.

Join Nate the Great and his trusty companion, Sludge, in solving the greatest mysteries a boy could search for. In this collection, Nate hunts down a lost grocery list, a favorite stamp, a genius pet, a beach bag, a yucky valentine, second base, and an evil, book-destroying monster.

Many people go their whole lives without noticing anything that is afoot, amiss, or even untoward; without ever experiencing that toe-tingling, stomach-twisting sensation that a mystery is about to unfold. Not Bonnie Montgomery—the world's best detective. Not that anyone (other than Grampa Banks) has heard of her… But they might have heard of the great Montgomery Bonbon, the well-dressed gentleman detective who (apart from the hat and moustache) looks suspiciously like a 10-year-old girl.

Captain Arthur Morstan has vanished. Where is he, and does his disappearance have anything to do with the six pearls sent to his daughter Mary? Our crime-fighting sleuth decides to investigate.

By sixth grade, Miranda and her best friend, Sal, know how to navigate their New York City neighborhood. They know where it's safe to go, like the local grocery store, and they know whom to avoid, like the crazy guy on the corner.

But things start to unravel. Sal gets punched by a new kid for what seems like no reason, and he shuts Miranda out of his life. The apartment key that Miranda's mom keeps hidden for emergencies is stolen. And then Miranda finds a mysterious note.

Twelve-year-old Myrtle Hardcastle has a passion for justice and a highly unconventional obsession with criminal science. Armed with her father’s law books and her mum’s microscope, Myrtle studies toxicology and keeps abreast of the latest developments in crime scene analysis. When her next-door neighbor, a wealthy spinster and eccentric breeder of rare flowers, dies under mysterious circumstances, Myrtle seizes her chance. With her unflappable governess, Miss Ada Judson, by her side, Myrtle takes it upon herself to prove Miss Wodehouse was murdered.

Judy Moody is in a royal purple-mountain-majesties mood. Make that Majesty with a capital M! With Grandma Lou’s help, Judy has dug up proof that some old-timey Moodys (aka the brave Mudeyes) lived in merry olde England. In fact, if her grandpa’s notes are right, Judy might even be related to - royal fanfare, please - the Queen herself! Should Judy start packing her purple robe for a sleepover at Buckingham Palace?

Hilton Cubitt is worried. Drawings of "dancing men" keep appearing around his house and they're frightening his wife, who seems to know what they mean. Can our brilliant hero solve the mystery of these drawings before disaster strikes?

Wonder at the puzzling disappearance of the Jewelled Moth! Marvel as our heroines, Sophie and Lil, don cunning disguises, mingle in high society and munch many cucumber sandwiches to solve this curious case! Applaud their bravery as they follow a trail of terrible secrets that leads straight to London’s most dangerous criminal mastermind, and could put their own lives at risk too....

Ben Ripley may only be in middle school, but he's already pegged his dream job: CIA 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 nerdiness, Ben is not 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 CIA academy.

Twelve-year-old criminal mastermind Artemis Fowl has discovered a world below ground of armed and dangerous—and extremely high-tech—fairies. He kidnaps one of them, Holly Short, and holds her for ransom in an effort to restore his family's fortune. But he may have underestimated the fairies' powers. Is he about to trigger a cross-species war?

I is for Island.... It’s picnic time! Dink, Josh, and Ruth Rose pack up a basket and wade out to Squall Island. Right away, they find a 100-dollar bill in the sand! But when they come back the next day, the entire island has mysteriously disappeared. What is the secret of Squall Island?

For the people who live on the banks of the Thames, the river is a living, breathing thing. It can take your treasures. It can hide your treasures. And, sometimes, it can give them back. Bo and Billy are two children who have never met. Billy is an orphan. Bo’s dad died when she was small and now her brother is off to war. Both children are poor, but they have each found half of a priceless treasure, given up by the river. A treasure which – when the pieces are reunited – holds the power to give back to one of them the most precious thing they have ever lost.

Some sneaky soul has stolen the skeleton from the nurse’s office! The principal promises free aquarium tickets to the savvy sleuths who can track down poor Mr. Bones. It’s up to Dink, Josh, and Ruth Rose to follow the clues and put those old bones to rest.

Help Dink, Josh, and Ruth Rose solve mysteries from A to Z! This collection includes Detective Camp, Mayflower Treasure Hunt, White House White-Out, and Sleepy Hollow Sleepover.

It’s the day before the big ballet recital, and Nancy Drew and her best friends, Bess and George, are very excited. But suddenly, the tape with the dance music on it is missing! Everyone in the class thinks Bess took it, but Nancy knows better. It’s up to her to find the culprit and the tape before it’s too late.

The festive season has come to Sinclair’s, and Sophie and Lil are spending the holidays at snowy Winter Hall. But it turns out that this is no ordinary house party.... As sinister secrets come to light, our intrepid heroines find themselves faced with a more baffling mystery than ever before! With the help of their friends, can they uncover the truth in time to foil a truly diabolical plot? Or will Mr Sinclair’s New Year’s Eve Midnight Peacock Ball spell disaster for the dauntless young detectives?

The whole town has turned out to watch the Green Lawn women challenge the men and to see Mr. Pocket's prized baseball collection. But sometime during the game, the balls are stolen! The police suspect the umpire of foul play. Can Dink, Josh, and Ruth Rose prove he's innocent, or is it strike three for the Green Lawn ump?