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This is the original 1927 story of The House on the Cliff: The Hardy Boys Book 2. Frank and Joe Hardy, brothers who are high school students, use their investigation skills to solve the mystery of the vacant house on the cliff that was supposed to be haunted.

Frank and Joe Hardy, erstwhile teenage detectives, feel somewhat foolish after accepting a counterfeit bill while helping a stranger at the Bayport train station. Over a period of weeks, friends and family members fall prey to exchanges with counterfeiters, sometimes in transactions amounting to hundreds of dollars. Frank and Joe's father, the highly esteemed private detective Fenton Hardy, is working with the Secret Service to track down the counterfeiting ring, but thus far they haven't had much luck.

Henry, Jessie, Violet, and Benny didn't think the old trunk in their house held anything interesting. But an unusual statue they find inside leads them to the Reddimus Society, a secret guild dedicated to returning lost treasures to where they belong. Now the Aldens must help their new friends by traveling across the country with the statue and six mysterious boxes! Can the Boxcar Children keep these seven treasures out of the wrong hands?

Allie Sheridan's world is falling apart. Her brother's run away from home. Her parents ignore her. And she's just been arrested. Again. This time, her parents have had enough. They send Allie to Cimmeria Academy - far away from her London friends. The school is beautiful - filled with gorgeous, ultra-wealthy teens who travel by private jet and were raised by nannies. Allie has never felt more of an outsider. Instead of hating boarding school though, Allie begins to feel happy. She's slowly making friends. And there's Carter, a brooding loner with whom she feels an instant connection.

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?

Twelve-year-old Flick adores Jack and loves solving puzzles with him. But Jack is soon to flee the family nest, and Flick worries she'll lose her partner in crime. During his gap year in Peru, tragedy strikes when an earthquake devastates the region and no one knows what has happened to Jack. Flick and her family are thrown into the horrible unknown. She finds a key on a fine gold chain and a note with the initials SF in his room, and clings to the hope that SF (whoever that is) might hold the clue to finding her brother.

Stella Montgomery is in disgrace. The Aunts have sent her to Wakestone Hall, a grim boarding school where the disobedient are tamed and the wilful are made meek. But when a friend disappears, Stella is determined to find her -- no matter the danger ...

The world's largest reef exhibit is coming to the Bayport Aquarium. Frank and Joe are stoked for the unveiling of Predator Reef, a 300,000-gallon tank that houses small sharks, rays, and thousands of colorful fish. It's also home to the aquarium's new mascot, Captain Hook - a rare and valuable, 500-pound, giant sea turtle.

There is great activity in the Hollister household upon the arrival of Domingo, the donkey promised Sue in New Mexico. The excitement mounts higher with the discovery of a note attached to the donkey’s halter signed Y.I.F. So begins one of the two mysteries that run through this book.

The City Spies head to the Big Apple when a credible threat is made to a young climate activist who is scheduled to speak in front of the upcoming United Nations General Assembly. With Rio acting as alpha and a new member in their ranks, the team’s mission to protect a fellow teen takes them on an exciting adventure in, around, and even under the greatest city in the world as they follow leads to the outer boroughs, the UN Headquarters, and even the usually off-limits stacks that extend deep under the main branch of the New York Public Library.

Josephine Williams is a future-focused, internet-loving 11-year-old who is desperate to explore the world beyond her cul-de-sac—and her browser. When she learns about Josephine Holloway—a woman who started the first Girl Scout Troop for Black girls in America—she's certain she must start her own. Enlisting her friends Margot Anderson and Wesley Evans, the trio begin their quest for their Camping Badge. Drawn to an abandoned factory nearby, they stumble across something strange. An ancient square television and two tatty armchairs.

The thrilling finale to the New York Times best-selling Masterminds series from middle grade star author Gordon Korman. Perfect for fans of Rick Riordan and James Patterson. After a serious betrayal from one of their former friends, the clones of Project Osiris are on the run again. Now separated into pairs, Eli and Tori and Amber and Malik are fighting to survive in the real world.

Ever since the accident, Tom's struggled with his mobility. But he has a secret escape: Skylark, his drone - through this technology, he can fly above his Lake District home, exploring his world from a totally different perspective. But when he stumbles upon a terrorist plot, he knows no one will believe him. Maggie and Joel, a sister and brother on holiday in his aunt's cottage, are the only ones who can help...but can they stop the plot in time?

Timmy Failure is not just any detective - he is the greatest detective in his town, perhaps the nation. He is so famous that there have been seven books written about his life. Plus a movie. And so he has agreed to provide the world with his extraordinary origin story, as dictated to his biographer and best friend, Charles "Rollo" Tookus.

The Aldens are excited to visit a deserted South Seas island. But soon they discover clues that they are not alone. Is someone on the island watching them?

Help Dink, Josh, and Ruth Rose solve mysteries from A to Z! This collection includes Detective Camp, Mayflower Treasure Hunt, White House White-Out, and Sleepy Hollow Sleepover.

Baby Zeke investigates a shocking crime! A villager arrested. A mysterious drop pile. A missing nether star! Can Baby Zeke discover who stole the nether star before it's too late? This book includes a bonus short story at the end!

Die Olchis - obergrätige Ermittler! Wenn Mister Paddock, der weltberühmte Olchi-Detektiv aus London, und sein schusseliger Gehilfe Dumpy ermitteln, zittern die Bösewichte und Halunken. Ob Gully-Gangster, Falschspieler oder Trickbetrüger – Mister Paddock und Dumpy nehmen die Fährte auf. Und mithilfe der Olchis aus Schmuddelfing lösen sie jeden Fall.

Amy and Dan make shocking discoveries about their family's power and their parents' deaths as they track the next clue to a remote corner of the world.

Chet and Biff, chums of Frank and Joe Hardy, intend to take a pleasure trip down the coast in Biff’s new boat. They start during an ominous storm and then disappear. Mr. Hardy leaves to capture a dangerous criminal he has been tracking. Frank and Joe set out to find Chet and Biff over the great objections of their visiting Aunt Gertrude. When Frank and Joe finally find them, they are all captured. The Hardy Boys use their investigation skills and lots of courage in dangerous situations to find and rescue Chet and Biff—the missing chums.