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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?

Before Julia Stoner died, she heard a strange whistle. Now her sister Helen has started to hear the same sound. Can our celebrated sleuth solve the mystery before Helen suffers the same fate as her sister? The game is afoot!

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.

江戸川乱歩の不朽の名作、少年探偵団シリーズ 名探偵・明智小五郎と共に小林芳雄少年率いる少年探偵団が怪人二十面相の悪事をあばいていきます。

Judy Moody is in a mood. A sleuthing, Nancy Drew kind of mood. So what’s a WBMS (world’s best mystery solver) to do? Go find a mystery, that’s what! And she doesn’t have to snoop for long: when Mr. Chips, a beloved crime-dog-in-training, goes missing, Judy Drewdy and her chums, agents Dills Pickle (Frank), Spuds Houdini (Rocky), and James Madagascar (Stink) find themselves smack-dab in the middle of a real-life, scare-your-pants-off whodunit. Was Mr. Chips stolen by dirty dognappers? And why are chocolate-chip cookies disappearing all over town?

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.

A lovable dog helps his human girl solve a mystery. Kayla made peanut butter treats for Jillian's new puppy, Thor. But now the treats are missing. What does Kayla know? There are three treats missing. King was in the kitchen. King's breath doesn't smell like peanut butter. What does King know? There's an intruder in the house. How will they solve the mystery?

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.

Theo Boone might only be 13, but he's already uncovered key evidence in a groundbreaking murder trial and discovered the truth behind his best friend's abduction. Now with the latest unfolding of events in Strattenburg, Theo will face his biggest challenge yet. Filled with the intrigue and page-turning suspense that made John Grisham a number-one international best seller and the undisputed master of the legal thriller, Theodore Boone's adventures will keep listeners enthralled until the very last minute.

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.

When Daisy Wells and Hazel Wong set up their very own secret detective agency at Deepdean School for Girls, they struggle to find any truly exciting mysteries to investigate. (Unless you count the case of Lavinia's missing tie. Which they don't.) Then Hazel discovers the Science Mistress, Miss Bell, lying dead in the Gym. She assumes it was a terrible accident - but when she and Daisy return five minutes later, the body has disappeared. Now Hazel and Daisy not only have a murder to solve: they have to prove one happened in the first place.

Master storyteller Jim Weiss brings the world of Sherlock Holmes and Doctor Watson to life for children. Features four classic Holmes mysteries.

In this third installment of the Minecraft Gamer's Adventure series, Steve is invited to participate in an elite building competition on Mushroom Island. His friends - Max, Lucy, and Henry - are impressed and want to join their friend on a journey to the island. Yet not everyone is happy: Steve's neighbor, Kyra, is upset because she wasn't chosen as a contestant.

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.

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.

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?

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?

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.