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Once Amy and Dan Cahill's choice was simple - take a million dollars or the first of 39 Clues that lead to the source of unimaginable power. Now it's clear that the hunt for Clues is bigger than anything that Amy and Dan could ever have imagined.

Theodore Boone is back in a new adventure, and the stakes are higher than ever.... When his best friend, April, disappears from her bedroom in the middle of the night, no one, not even Theo Boone - who knows April better than anyone - has answers. As fear ripples through his small hometown and the police hit dead ends, it's up to Theo to use his legal knowledge and investigative skills to chase down the truth and save April.

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.

Eleven-year-old Tilly has lived above her grandparents’ bookshop ever since her mother disappeared shortly after she was born. Like the rest of her family, Tilly loves nothing more than to escape into the pages of her favourite stories. One day Tilly realises that classic children’s characters are appearing in the shop through the magic of ‘book walking’ - crossing over from the page into real life.

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, especially after Doris herself shows up and demands her letters!

Though he's only 13, Theodore Boone has spent more time in the courtroom than almost anywhere else, and there's always a new adventure waiting. After being falsely accused of vandalism and theft, Theo is happy to finally be out of the hot seat, once more dispensing legal advice to friends and community members, when an exciting new case demands his urgent attention.

Catalina "Cat" Duran and her class are off to the recycling center for what seems like the worst field trip ever. But when they arrive, they find out that the recycling plant has been sabotaged! Only Cat and her friends can save the day (and help save the Earth, too!).

When my old friend Professor von Volt called to ask for help, I agreed immediately, even though it meant trekking halfway around the world to Mouse Everest! The trip was long and dangerous. I almost froze my tail off along the way. And then I was kidnapped by a yeti! Yes, it was truly an amazing adventure.

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?

A bizarre chain of events begins when 16 unlikely people gather for the reading of Samuel W. Westing's will. And though no one knows why the eccentric, game-loving millionaire has chosen a virtual stranger - and a possible murderer - to inherit his vast fortune, one thing's for sure: Sam Westing may be dead...but that won't stop him from playing one last game!

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.

Nate the Great needs your help. Annie's dog, Fang, is missing! That's what Nate discovers when his friends throw him a surprise Happy Detective Day party. Where is Fang? As you and Nate track down clues - Fang was learning tricks for the party; he was seen running away from two tiny poodles and following a lady wearing fluffy-bunny shoes - Nate will share his expert detective skills with you so you can sharpen your sleuthing talents.

These audiobooks introduce young listeners 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 called in on the case. At first, even Nate is stumped - the stamp has just vanished without a trace! But with clues from the weather and his ever-faithful dog, Sludge, Nate is soon on his way to wrapping up his stickiest case yet.

Carve out family time for this Halloween read perfect for young listeners! Kids can problem-solve with Nate, the world's greatest detective, using logical thinking to solve mysteries! It is Halloween night, and all the kids are dressed up to go trick-or-treating. But Nate's friend Rosamond needs his help. Her cat Little Hex is missing. Is he hiding, or is he lost? Nate and his trusty dog, Sludge, are on the case!

These audiobooks introduce young listeners 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, it looks as if the contest will flop. It's a tough case for Nate and Sludge as they search for clues leading to the missing prize. In more ways than one, it's a very fishy business. Can Nate and Sludge find the prize in time?

These audiobooks introduce young listeners to the detective mystery genre. Perfect for the Common Core, kids can problem-solve with Nate, using logical thinking to solve mysteries! Early one morning, a torn slip of paper with the mysterious letters VITA appears on Nate the Great's doorstep. He and his faithful dog, Sludge, set off to solve this latest mystery. Against ferocious cats, hostile adversaries, and a sly, phony clue - not to mention a three o'clock deadline - Nate struggles to prove, once again, that he is Nate the Great.

Julian, Dick, Anne, George and Timmy the dog find excitement and adventure wherever they go in Enid Blyton's most popular series. In book 12, somebody is flashing lights from the top of the old tower on the treacherous rocks off the Cornish coast. The Famous Five sense danger. But can they solve this mystery without getting hurt themselves?

N is for Nugget...Dink, Josh, and Ruth Rose are spending a week at a dude ranch. Everything is normal in a cowboy kind of way - until Josh finds a huge gold nugget! Just as they are deciding what to do with their newfound riches, the nugget disappears. Will the kids be able to track down the thief before it's time to mosey on home?