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Got a mystery to solve? Jigsaw Jones is on the case. When Bobby Solofsky is accused of stealing the grand prize for a pet talent show, it's up to Jigsaw to clear his greatest rival's name. Soon, more things start to go missing at the pet store and Jigsaw enters his own dog into the contest to solve the case. Can he find the prize medal in time for the competition?

Reggie Armitage the III has found a box with a list of codes and a golden skeleton key - but he has no idea what the key opens or how to crack the code. It's a good thing second-grade sleuths, Jigsaw Jones and Mila Yeh, are investigating The Case of the Golden Key. 

It's the biggest - okay the most stressful - night of the year.... Parents' Night! And Geetha Nair's painting has just gone missing. The stakes are high, but Jigsaw Jones and Mila Yeh have never encountered a mystery they couldn't solve. Can they track down their friend's art in time for the most important show of the year in The Case of the Vanishing Painting? 

Bertie Bradshaw never set out to become a spy. He never imagined traipsing around war-torn London, solving ciphers, practicing surveillance, and searching for a traitor to the Allied forces. He certainly never expected that a strong-willed American girl named Eleanor would play Watson to his Holmes (or Holmes to his Watson, depending on who you ask). But when a young woman goes missing, leaving behind a coded notebook, Bertie is determined to solve the mystery. 

In this series opener, Koko Dodo the cookie chef has a big problem. Today is the day of the royal cookie contest, and someone has stolen his top-secret fudge sauce! Luckily, a spy enters the scene just in time (or rather, crashes in on her roller skates): Didi Dodo! This might be Didi's first case ever, but she has a daring plan to help Koko. Koko would prefer a safe, simple, sure-to-work plan, but without another option, he and the amateur sleuth take off on a wacky caper full of high-speed chases and big belly laughs....

The audio edition of the best-selling middle grade novel about a spunky girl born without arms and a boy with Tourette syndrome navigating the challenges of middle school, disability, and friendship - all while solving a mystery in a western theme park. Aven Green loves to tell people that she lost her arms in an alligator wrestling match, or a wildfire in Tanzania, but the truth is that she was born without them.

Iggy Peck is an architect at his very core: When he's not making houses out of food, his head is up in the clouds, dreaming of design. So he's totally blown away when Ada Twist's Aunt Bernice inherits an old house from ice cream mogul Herbert Sherbert that is filled with countless rooms from all his favorite architectural periods. But something's not quite right....

Mac must crack a secret code that has been recovered from a double agent. A series of clues leads Mac to France and then to Japan, where he comes face-to-face with his arch-nemesis, the KGB man...and the world headquarters of Nintendo! Is the KGB Man secretly behind all of this? And are Mac's video-game skills good enough to face down his enemy at the Video Game World Championships?

England is in trouble! A priceless violin has been stolen, and there's only one person who can help: Mac B., kid spy. Mac's adventure takes him on a top-secret museum night watch, zip-lining in Italy with his trusty corgi sidekick, and on an undercover mission in the heart of enemy territory. But when he ends up as a captured prisoner, is the mission lost for good?

The precious Crown Jewels have been stolen, and there's only one person who can help the Queen: her newest secret agent, Mac B. To help her, he must travel around the globe in search of the stolen treasure...but will he find it in time? From secret identities to Karate hijinks, this fast-paced, witty, and historically inspired chapter book will keep listeners guessing. With fascinating historical facts masterfully sprinkled throughout, the first entry in this series offers adventure, intrigue, absurdity, and humor.

The novel that inspired the classic horror film and the 2025 major motion picture starring Jennifer Love Hewitt and Madelyn Cline. Four reckless teens fight to outsmart a brutal killer determined to avenge a young boy's death in this suspenseful thriller. After a party, four teens are in a...

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.

September, 1939. When Jimmy is evacuated to a small village in Wales, it couldn’t be more different from London. Green, quiet and full of strangers, he instantly feels out of place. But then he finds a skull hidden in a tree, and suddenly the valley is more frightening than the war. Who can Jimmy trust? His brother is too little; his best friend has changed. Finding an ally in someone he never expects, they set out together to uncover the secrets that lie with the skull. What they discover will change Jimmy - and the village - forever.

What is the connection of "Fowl Relief" and an English golf-playing king? Does the nickname of Jimmy Douglas' great-great-grandfather have any significance? Tie these answers with the other clues and the mystery of the purple bird is solved, but not until Djuna, the brilliant young sleuth, and his pal Jimmy go through an ordeal that almost takes their lives. The boys tangle with an antique dealer and a tiger-skin diary - just to name a few of the events - in their struggle to solve the mystery.

"Katal!" The black bird repeated the two syllables again and again. "Katal! Katal!" As Gulliver Queen seeks out the meaning of the strange word, he is drawn into the world of international diplomacy - and dangerous espionage! As he follows the trail of clues, Gully acquires two friends from India who aid him in the search for a missing embassy guard.

Mysteries have a way of finding Djuna, and this time a missing page from an old ship's log and the dead captain's haunted house start the ball rolling. Djuna has learned that Captain Beekman brought a treasure from his whaling trips. Who can have an interest in letting the boy get lost? Was Djuna close to the answer of the mystery?

In The Yellow Cat Mystery, amateur sleuth Djuna visits his friend, Tommy, in Florida. His yellow cat has a sore tooth, and they set off to see the dentist. The dentist is new to the town and doesn't seem to be able to help them. They do, however, notice two persons who came from a mysterious black-lacquered ship at sea - and a normal day suddenly becomes an unusual adventure.

Free passes to the circus seemed pretty exiting to Djuna and his friend, Tommy Williams, and things promised to be even more exiting when they met their old friends, Socker and Cannonball, at the entrance gate, but they were only the start of a hair-raising experience. The boys soon learned that the newspaper reporter and the state trooper were trying to uncover a pack of tricksters who were cheating the circus audiences.

Djuna and Ben weren't sure they believed in ghosts. The little girl who opened the door of the haunted house didn't look like a ghost, yet she vanished into thin air. They had to find out what happened to her. And they had to rescue Waterbury, the time-telling turtle who walked into the deserted house - and didn't walk out. Djuna found clues, and he added them all up to solve a case the secret service couldn't crack!

When Nick and Tesla Holt are sent to live with their eccentric Uncle Newt, they find their new neighborhood is full of secrets. What the heck is going on? To unravel the mysteries (and save their skins), Nick and Tesla must use everyday household objects to build electromagnets, rocket launchers, and other crazy contraptions.