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What would happen if you discovered that your family was one of the most powerful in human history? What if you were told that the source of the family's power was hidden around the world, in the form of 39 Clues? What if you were given a choice - take a million dollars and walk away...or get the first Clue? If you're Amy and Dan Cahill, you take the Clue - and begin a very dangerous race.

When suburban Claudia Kincaid decides to run away, she knows she doesn't just want to run from somewhere she wants to run to somewhere--to a place that is comfortable, beautiful, and preferably elegant. She chooses the Metropolitan Museum of Art in New York City. Knowing that her younger brother, Jamie, has money and thus can help her with the serious cash flow problem she invites him along.

Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. In book 18, the Famous Five hunt for the lost dungeons of a ruined castle on Finniston Farm. The friends are determined to find them, and whatever they hide, but they are not alone. Can the Famous Five get there first?

These are just some of the 10 brain-twisting mysteries that Encyclopedia Brown must solve by using his famous computerlike brain. Try to crack the cases along with him!

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.

Dink, Josh, and Ruth Rose are having an excellent time at the Penelope Gwinn concert. But during intermission, Dink injures his arm! At the same time, the singer's diamond necklace is stolen. Could the two mishaps somehow be connected?

When Dink, Josh, and Ruth Rose follow a pale, dark-haired stranger into Ellie's Diner, he vanishes! But Ellie has a cut on her neck...or could it be a bite? Could there really be a vampire in Green Lawn? And could Dink, Josh, and Ruth Rose be his next victims?

The Owl Express: Nate, the great detective, and his dog Sludge, hit the rails on their latest case. Their mission: To guard an owl named Hoot. Hoot belongs to Nate’s cousin, Olivia Sharp, and she thinks someone on the train might be out to get her feathered friend. Then Hoot disappears! The Tardy Tortoise: The sun is shining, the birds are singing, and someone is eating the flowers in Nate's garden. A green tortoise is slowly stepping across the lawn, and Nate is slowly following him. It may take all of Nate the Great's patience and sharp eyesight to find out slowly.

Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. In book 20, the Famous Five visit Whispering Island, another mysterious place with a million stories surrounding it. Is it really haunted? It's all fun and games until the Five get stranded there and realise they're not the only ones on the island.

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?

Nate the Great doesn't especially want to go to a birthday party for Annie's ferocious dog, Fang. But he can't resist a mystery: and when Annie loses her house key and can't get inside to set up the party, Nate and his trusty dog, Sludge, are hot on the trail!

Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. In book 19, the Famous Five travel to Demon's Rocks and discover a very old and valuable gold coin. Demon's Rocks is famous for its stories of bountiful treasure, but if the myth is reality, who does the treasure belong to? The Five are determined to find out, but first they need to know who else is exploring Demon's Rocks for the treasure....

Dink, Josh, and Ruth Rose are excited to see Uncle Warren's new racehorse, Whirlaway, in action. But the night before the big race, the horse disappears! Can the kids figure it out or is Whirlaway out of the winner's circle for good?

Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. In book 17, the Famous Five are skiing and having lots of fun. But who is living in the mysterious house near their chalet? The caretaker claims it's been deserted for years, but the Five are sure they've seen a face at the window. A terrified, and haunted face. Have the gang got the courage to find out?

Although Nate the Great and his dog, Sludge, are on vacation, they just can't resist a new case. When his friend Claude's grocery list is lost, Nate sets out to find it before lunch. But lunch draws nearer and the list is still missing. Nate the Great is worried: His reputation is at stake. It looks as if list has vanished - unless Rosamond's strange cat pancakes are somehow at the heart of the mystery.

Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. In book 16, it's holiday time at Billycock Hill, and the Famous Five make a new friend - a real pilot! But when he disappears with top secret equipment, the Five begin to wonder if their new friend could be a spy, or worse, a traitor. Whatever his motives, the gang feel duty-bound to investigate.

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。

Sherlock is on the trail of a murderer. As he investigates the death of country gentleman John Douglas, he begins to piece together some unusual clues: muddy bootprints, a tattoo, and something called "The Valley of Fear." Can Holmes put these together in time to solve the mystery?

Edward "Egg" Garrison thought the field trip to the caverns would be a great place to take pictures. It turns out it's the perfect place for a mystery!

Is there a bear loose in the woods by Jigsaw Jones' town? For once this second-grade detective and his partner Mila Yeh might be out of their depth! One way or another, these two young sleuths will get to the bottom of who, or what is growling and snapping in those woods in The Case of the Bear Scare.