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Amy and Dan must steal a Clue guarded by thousands of the world’s best-trained soldiers. With their enemies closing in, the brother and sister are separated. Now how will they stand a chance?

Nancy has a new puppy that needs lots of training, patience, and love. But when the chocolate-chip muffins go missing, Nancy’s new puppy is blamed. The girls know that the puppy is innocent, and they are determined to find the real thief.

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?

A lovable dog helps his human girl solve a mystery. Kayla lost a tooth, but now it's missing! What does Kayla know? Her tooth is not inside the tooth fairy pillow. It's not inside her backpack. It's not inside the car. What does King know? Mason's hand smells like the tooth fairy pillow. How will they solve the mystery?

A lovable dog helps his human girl solve a mystery. Kayla and Mason both got mysterious letters, written in code. What does Kayla know? The same person left both letters. It's someone she and Mason both know. The two letters are the same, except for the second word. What does King know? Jillian left the letters. What do the letters say?

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?

A lovable dog helps his human girl solve a mystery. King and Kayla are playing fetch with their friends, Jillian and Thor. Jillian throws King’s favorite ball too hard, and now it’s gone missing! King and Kayla must put together the clues to figure out where it went - and who has it.

Teddy Fitzroy's back for another zoo mystery this time it's a koala caper in this action-packed follow-up to Belly Up, which Kirkus Reviews called great fun. School troublemaker Vance Jessup thinks Teddy Fitzroy's home at Fun Jungle, a state-of-the-art zoo and theme park, is the perfect place for a cruel prank. Vance bullies Teddy into his scheme, but the plan goes terribly awry. Teddy sneaks into the koala exhibit to hide out until the chaos dies down.

Steve likes to spend his mornings in the NCP village and trade his wheat for emeralds, armor, books, swords, and food. One morning, he finds that Zombies have attacked the villagers. The Zombies have also turned the village blacksmith into a Zombie, leaving Steve without a place to get swords. To protect himself and the few villagers that remain, Steve goes on a quest to mine for 40 diamonds, which are the most powerful mineral in the Overworld.

When there's a bank robbery in the country village where Djuna lives, and one of his dog's best friends gets shot in the escape, the boy makes up his mind he'll find out who did it. His chum and his dog, Champ, are in on the hunt, and two heads and a keen nose are better than one. The boys remember something queer they noticed about a truck with a covered load that passed them on the road when they were going fishing.

Got a mystery to solve? Jigsaw Jones is on the case. Anything that ever goes missing or lost, Jigsaw and his partner, Mila, can find. Then, during a magic show, they watch a toy dinosaur disappear, right in front of their eyes! Even the magician can't seem to bring it back. Luckily Jigsaw doesn't believe in magic, and he's determined to find that dinosaur!

King, Kayla, and Grandma find a dog who has lost his human family. What does Kayla know? This dog doesn't have a collar or any tags. He can sit, lie down, and shake hands. No one around here knows who he is. What does King know? The dog's family is staying at a campground. Can they figure out who he is and where his family is?

Cruz Coronado leaves his tranquil home in Hawaii to join 23 talented kids from around the globe to train at the Explorer Academy with the world's leading scientists to become the next generation of great explorers. But for Cruz, there's more at stake. No sooner has he arrived at the Academy than he discovers that his family has a mysterious past with the organization that could jeopardize his future. In the midst of codebreaking and cool classes, new friends, and augmented reality expeditions, Cruz must tackle the biggest question of all: Who is out to get him, and why?

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?

In the eighth book in the number-one best-selling Alex Rider series by Anthony Horowitz, Alex meets international do-gooder Desmond McCain. But a simple card game between them rapidly leads to a duel to the death - one that could result in the destruction of an entire country.

In the sixth book in the number-one best-selling Alex Rider series by Anthony Horowitz, teenage spy Alex has a chance encounter with the son of multi-billionaire Nikolei Drevin. Soon Alex finds himself in the middle of an international crime hunt. The connection - Ark Angel, a revolutionary space hotel with catastrophic potential.

Jack's little sister, Susie, is so annoying! The Secret Seven are furious when they discover she's formed her own 'detective gang'! Then some money is stolen, and Susie is a chief suspect.

Jackson and Quigley were this close to joining the FBI (Frosty Bureau of Investigation), until Jackson’s mom found out and they ended up scrubbing seagull poop instead. At least they have Uncle Bryn’s birthday party to look forward to. But when they get to the Ice Cream parlor, the FBI agents are acting strange. Instead of talking, Uncle Bryn and his friends just finish their glowing green ice cream, then jump into a waiting ice cream truck and disappear. It's obvious that something has gone very, very wrong, and now Uncle Bryn is suspected of being a master thief!

Farewell, my lunchbag: Danger may be Chet Gecko's business, but dessert is his delight...Chet Gecko's hunger for mystery is matched only by his appetite for cockroach casserole, mosquito marshmallow surprise, and stinkbug pie. So when the cafeteria needs help nabbing a food thief, Chet digs into the case with a passion he usually reserves only for dessert. But this time Chet may have bitten off more than even he can chew. Someone has framed him, and now everyone at Emerson Hicky - even his trusted partner, Natalie Attired - thinks the food thief is none other than Chet!

Theo has been worried about his good friend Woody Lambert. Woody is struggling at school and making bad choices. But when Woody is arrested - an unwitting accomplice to armed robbery - Theo knows he is innocent. Racing the clock while Woody sits in jail, Theo will do everything in his power to help his friend and save Woody from an unforgiving system where justice is not equal for all.