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The trip to the amusement park should be fun. But when Samantha "Sam" Archer and her friends try out the haunted house ride, things go terribly wrong!

A strange telegram lures fourteen-year-old Amy Cahill and her younger brother, Dan, deep into Russia and away from the only trustworthy adult they know. Signed with the initials NRR, the telegram launches a race to uncover a treasure stolen by the Nazis and the truth about the murder of the last Russian royal family. All too soon, the treasure hunt starts to smell like a Lucian trap. But the bait might just be irresistible . . . what will Amy and Dan risk to find out what really happened on the night their parents died?

The Aldens spend the summer on their own private island. There they meet a new friend with an amazing secret!

Mara Turing recibe un misterioso mensaje cuando está a punto de iniciar sus vacaciones de verano en Nueva York: "Necesito tu ayuda". El enigmático llamamiento procede de su tío, que desapareció sin dejar rastro cuando ella tenía apenas cinco años. El viaje para encontrar a su tío, Arnold Turing, llevará a Mara y a sus amigos a aprender programación en un garaje de Queens, NY, a ver el mundo con ojos críticos y a enfrentarse con el diabólico tándem formado por Hermes, una inteligencia artificial muy avanzada, y Falko McKinnon, el hacker más peligroso de la historia.

Los palos de Vicky, la campeona de golf, han desaparecido. Este es un caso para el famoso detective privado de Ciudad Amable Sabueso Orejotas y su ayudante, el gato Floro. La escritora Luisa Villar Liébana regresa con otro de sus famosos detectives, tan perspicaz e inteligente como la gallina Cloti, y una historia de suspense que defiende la justicia. Esta nueva aventura de Sabueso Orejotas hará las delicias de los más jóvenes amantes del misterio y las historias policiacas.

Bess and I were thrilled to bump into our old buddy Maggie Rogers, a promising young dancer who is in River Heights to perform a lead role in Sleeping Beauty. But someone's out to get Maggie. First, her phone was tampered with, making her late for rehearsal. Then, her face was violently scratched out on the show's posters, and her dressing room was trashed beyond belief. I'm determined to find out who's trying to sabotage my friend's career. But I have to crack this case before the big show — or it could wind up being Maggie's last dance!

Judy Moody is in a mood. A sleuthing, Nancy Drew kind of mood. So what’s a WBMS (world’s best mystery solver) to do? Go find a mystery, that’s what! And she doesn’t have to snoop for long: when Mr. Chips, a beloved crime-dog-in-training, goes missing, Judy Drewdy and her chums, agents Dills Pickle (Frank), Spuds Houdini (Rocky), and James Madagascar (Stink) find themselves smack-dab in the middle of a real-life, scare-your-pants-off whodunit. Was Mr. Chips stolen by dirty dognappers? And why are chocolate-chip cookies disappearing all over town?

K is for Kidnapped! Someone has kidnapped the king and queen of Socotra. For safety's sake, their son is staying with Dink until they are safe. But then the prince is kidnapped, too! Can Dink, Josh, and Ruth Rose unmask the royals' enemies before it's too late? Or is the royal family of Socotra...

Grace is the last matriarch of the Cahills, the world's most powerful family. Everyone from Napoleon to Houdini is related to the Cahills, yet the source of the family power is lost. 39 Clues hidden around the world will reveal the family's secret, but no one has been able to assemble them. Now the clues race is on, and young Amy and Dan must decide what's important: hunting clues or uncovering what REALLY happened to their parents.

The Boxcar Children know how much work it takes to live in the wilderness. They also know how much fun it can be! The children love exploring and learning new things at a primitive skills summer camp. But when strange things start happening around the camp, they need to use another of their favorite skills - mystery solving!

Pedro and Katie are visiting Pedro’s Aunt Carmen’s farm. A frowning scarecrow has the kids spooked. Shadows and creepy sounds have Katie convinced that old scarecrow is haunted. But could there be another explanation?

Katie and Pedro are enjoying a night of camping, but when it gets dark, Katie feels nervous. Her dad tells her that it won’t be very dark for long. Why? It’s a mystery that will be revealed with time. What other discoveries will Katie and Pedro make during their wait to solve the mystery?

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。

King’s favorite ball is missing. He and Kayla must figure out where it went—and who has it. What does Kayla know? 1. King’s ball went over the fence. 2. Jillian brought back a ball, but it wasn’t King’s ball. 3. None of the other balls next door are King’s. What does King know? There...

Judy Moody is in a royal purple-mountain-majesties mood. Make that Majesty with a capital M! With Grandma Lou’s help, Judy has dug up proof that some old-timey Moodys (aka the brave Mudeyes) lived in merry olde England. In fact, if her grandpa’s notes are right, Judy might even be related to - royal fanfare, please - the Queen herself! Should Judy start packing her purple robe for a sleepover at Buckingham Palace?

When the Crown Jewels go missing from inside a locked room, Mac's spy skills are put to the test. How did the thief break in? Where did the jewels go? And will Mac be able to solve this locked-room mystery before the thief escapes? This mystery isn't just a whodunit...it's a howdunit! The action in this adventure is nonstop as Mac travels to an ancient Irish castle to solve the mystery. There, he encounters everything from killer king cobras to bizarre ice sculptures...and even a revenge plot dating back hundreds of years! Will you be able to solve the mystery before Mac does?

Nancy has a new puppy that needs lots of training, patience, and love. But when the chocolate-chip muffins go missing, Nancy’s new puppy is blamed. The girls know that the puppy is innocent, and they are determined to find the real thief.

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. But nothing can prepare her for what awaits. Because when she arrives, she finds herself involved in the kidnapping of a young marquess, fleeing murderous villains, and trying to elude her shrewd older brothers—all while attempting to piece together clues to her mother’s strange disappearance. Amid all the mayhem, will Enola be able to decode the necessary clues and find her mother?

Seventeen-year-old Laurie Stratton should be happy. She has beauty, health, a handsome boyfriend, and loving parents. But Laurie has begun to feel the presence of a double, a shadowy figure that hovers just out of her reach. It has appeared to Laurie’s family and friends; it lingers in the shadows of Laurie’s room. Is Laurie going crazy - or is someone, something, trying to take over her life? As Laurie begins to ask questions about her ancestry, she uncovers an eerie mixture of ancient lore and paranormal powers.

A Time Best YA Book of All Time (2021) Run away to the Metropolitan Museum of Art with E. L. Konigsburg’s beloved classic and Newbery Medal­–winning novel From the Mixed-Up Files of Mrs. Basil E. Frankweiler. When Claudia decided to run away, she planned very carefully. She would be gone...