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A cross-eyed baseball pitch... A missing penknife named Excalibur... Poems that pack a punch... A kid-lover tumed kidnapper... And some tall tales that come up short! These are just some of the ten brain-twisting mysteries that Encyclopedia Brown must solve by using his famous computerlike brain...

While learning the art of ancient warfare in an exotic location, Amy and Dan uncover a devastating secret about their family that changes everything in this high-stakes adventure.

After hearing scratches in the attic, Alison discovers a dinner service covered in an intriguing floral owl pattern, and a series of events are set in motion that will change her life forever. Alison, her step-brother Roger and Welsh boy Gwyn are forced into a cyclical replay of the tragic Welsh legend of Blodeuwedd, in which a woman is turned into an owl as a punishment for betraying her husband.

Governments were toppled and rulers were killed during the last attempt to find the lost treasure Amy and Dan Cahill are searching for - do they even stand a chance?

Elmo and his sister love playing in the jungle house next door...that is, until mean old Mr Birdsnest moves in. But when it appears that Mr Birdsnest has kidnapped the children's grandma they must sneak back in to rescue her! A delightful and cleverly written story by the Children's Laureate Julia Donaldson.

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.

The third, explosive mission in the number one best-selling Alex Rider series. In the third book in the number one best-selling Alex Rider series by Anthony Horowitz, teenage spy Alex faces his most dangerous challenge yet. Teaming up with the CIA, Alex must go to a remote Caribbean island called Skeleton Key, where the insane general Sarov is hatching explosive plans to rewrite history.

When Henry and his big dog Mudge see a spy kit for sale, they know right away that it’s time to break open the piggy bank. With their spy hat and magnifying glass and secret code card, Henry and Mudge can flirt with danger, steal secrets, and start cracking codes.

Meet Enola Holmes, teenaged girl turned detective and the younger sister to Sherlock Holmes. When Enola Holmes, sister to the detective Sherlock Holmes, discovers her mother has disappeared, she quickly embarks on a journey to London in search of her.

The Empty Envelope E is for Envelope...Dink keeps getting envelopes in the mail addressed to "D. Duncan." But the letters inside all start with "Dear Doris" and don't make any sense! Josh and Ruth Rose think someone's playing a trick on Dink. But Dink is sure there's more to it than that...

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...

These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! Although Nate the Great and his dog, Sludge, are on vacation, they just can't resist a new case. When his...

While attempting to solve the mystery of a stolen jewel, Seikei, a merchant's son who longs to be a samurai, joins a group of kabuki actors in eighteenth-century Japan...

These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! A stegosaurus stamp belonging to Nate's friend Claude disappears, and the indomitable Nate the Great is...

Young listeners are introduced to the detective mystery genre in these chapter books on audio. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! Annie has lost her house key. Now she can’t set up for Fang’s birthday party. Nate doesn't...

Join the world’s greatest detective, Nate the Great, as he searches throughout San Francisco to solve the mystery of the lost joke book! Perfect for beginning readers and the Common Core, this long-running chapter book series will encourage children to problem-solve with Nate, using logical...

These chapter books introduce beginning readers to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! Nate the Great is about to enter his dog, Sludge, in the smartest pet contest. But when the prize disappears...

From the author of A to Z Mysteries comes a springtime egg hunt mystery featuring the younger siblings of the A to Z Mysteries kids! It's a mystery every month from popular A to Z Mysteries author Ron Roy! With the younger siblings of the A to Z Mysteries kids! April is for Adventure... In the...

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.

Celebrate 20 years of A to Z Mysteries! No foolin’! It’s the first of April in Green Lawn! Mr. Paskey, owner of the Book Nook, plays an April Fools’ Day prank on Dink, Josh, and Ruth Rose. They hatch a plan to get back at him, but then the bookstore is robbed—no joke! Can the kids...