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Dear Diary...Bess, George, and I are actually in Alaska! Everywhere you look, there are massive mountains and sparkling, deep-blue waters. We're on the maiden voyage of the Arctic Star luxury cruise ship, and my old friend, Becca Wright, the assistant cruise director, needs our help. She received threatening emails before even setting sail; then a bloody body turned up in the swimming pool.

Darkus is miserable. His dad has disappeared, and now he is living next door to the most disgusting neighbours ever. A giant beetle called Baxter comes to his rescue. But can the two solve the mystery of his dad's disappearance, especially when links emerge to cruel Lucretia Cutter and her penchant for beetle jewellery? A coffee-mug mountain, home to a million insects, could provide the answer - if Darkus and Baxter are brave enough to find it.

Henry, Jessie, Violet, and Benny are happy to share their home with Katya, the young gymnast, and watch her practice for the big competition. When things start going wrong at the gym, it quickly becomes clear that someone is trying to ruin Katya's chances of winning...but who? The Aldens want to help. The trouble is Katya's been acting a little mysterious herself - almost as if she's got something to hide. But what? Can the Boxcar Children solve both mysteries before the big competition?

There's something spooky going on at the ranch! When Halloween arrives, Hank - the self-appointed Head of Ranch Security - has got his hands full of adventure. First there's a problem with the Tricker Trees. Then the ranch is invaded by two skeletons, a witch, and a pirate. And when Hank goes to investigate a strange sound in the cake house, he's sure it can only be one thing...a ghost. Can Hank rid the ranch of this unwanted visitor? Or is he destined to be spooked for good?

An abandoned house at the end of the block. A mysterious girl in an upstairs window. A strange black SUV lurking around every corner. 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.

It's a tough job, but somebody's got to do it. Guts, glory, danger, and sacrifice are all in a day's work for Hank the Cowdog, Head of Ranch Security. While investigating a murder on the ranch, Hank finds himself the number-one suspect.

Using a cutting-edge technology called DHI - which stands for both Disney Host Interactive and Daylight Hologram Imaging - Finn Whitman, an Orlando teen, and four other kids are transformed into hologram projections that guide guests through the park. The new technology turns out, however, to have unexpected effects that are both thrilling and scary. Soon Finn finds himself transported in his DHI form into the Magic Kingdom at night. Is it real? Is he dreaming? Finn’s confusion only increases when he encounters Wayne, an elderly Imagineer who tells him that the park is in grave danger.

The critically acclaimed author of Felix Yz crafts a bold, heartfelt story about a trans girl solving a cyber mystery and coming into her own. Zenobia July is starting a new life. She used to live in Arizona with her father; now she's in Maine with her aunts. She used to spend most of her time...

King, Kayla, and Grandma find a dog who has lost his human family. What does Kayla know? This dog doesn't have a collar or any tags. He can sit, lie down, and shake hands. No one around here knows who he is. What does King know? The dog's family is staying at a campground. Can they figure out who he is and where his family is?

Fourteen-year-old Ronan Boyle is the youngest and lowliest recruit to the secret Garda, an Irish police force that handles the misdeeds of numerous magical creatures. Ronan's parents are in jail, but Ronan is convinced they were framed by the wee people. So, despite his small size, poor eyesight, and social awkwardness, he's determined to learn all he can in the Garda in order to prove his parents' innocence.

The adventure continues for Cruz, Emmett, Sailor, and Bryndis as they continue their studies at sea and travel to exotic locations around the world. A mysterious person alerts Cruz to impending danger while he and a few trusted pals explore ancient ruins in Petra, Jordan, and search for another piece of the puzzle his mother left behind. Worst of all, now his father has gone missing, which prompts Aunt Marisol, his number one protector, to leave the ship in search of him.

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 Drew’s dad surprises her with a trip to a beautiful New England ski resort for Christmas break. But no vacation can go smoothly when Nancy is involved. On her very first run down the slopes, Nancy hits a bad patch of ice and takes a serious tumble. A doctor sends her back to the hotel in a cast and mandates 12 days of bed rest. That means no long car trips back to River Heights and 12 days of sitting around. Luckily, there’s still the five-star dining and beautiful views. Just hours into her convalescence, Nancy witnesses something very suspicious.

Marlborough House is the home of Edward, the Prince of Wales (second child and eldest son of Queen Victoria). He lives there with various children and family members. Unbeknownst to the human royals, there is a corresponding clan of noblemice living there as well. At the moment, the human royal family is hosting the visiting royal family of Bohemia, along with that family’s corresponding group of stowaway noblemice. However, the teen noblemice of both houses have vanished without a trace, and everyone fears that one of the royal dogs may be responsible. Can Basil help?

It’s 1911, and the young detectives of Taylor & Rose are turning their talents to espionage. On a case for the mysterious Secret Service Bureau, the daring Miss Sophie Taylor and Miss Lilian Rose must leave London for the boulevards and grand hotels of Paris.

Raf knows Megan is trouble from the moment she steps into his mom's pet food store asking for a tarantula. But there's one thing you can count on in Chicagoland: Weird things happen several times a day.

Florian is 12 years old and has just moved to Washington. He's learning his way around using TOAST, which stands for the Theory of All Small Things. It's a technique he invented to solve life's little mysteries. But when he teaches it to his new friend Margaret, they uncover a mystery that isn't little. In fact, it's huge, and it involves the National Gallery, the FBI, and a notorious crime syndicate known as EEL. Can Florian decipher the clues and finish his homework in time to help the FBI solve the case?

Cam and her friend Eric are selling chocolate fudge and rice cakes door-to-door for charity. Eric can’t remember what to tell the customers. But Cam has no trouble. She simply looks at the speech and says "click". Then she stores a picture of it in her mind. When Cam sees a woman coming from a yellow house, she knows something is wrong. The woman is wearing a rain coat, but it isn’t raining. She’s wearing dark glasses, but the sun isn’t shining. And the yellow house looks deserted. Will Cam be able to solve the mystery with her amazing photographic memory?

Cam Jansen and her best friend, Eric Shelton, are at a charity function with their mothers to raise money for local firefighters. When the host's pearl necklace goes missing, the luncheon turns into a whodunit, and all the guests are suspects. Can Cam use her photographic memory to identify the culprit?

Exploring the mysterious tunnels under their grandfather's house on Hoarder Hill, Hedy and Spencer discover the Fantastikhana, an underground tournament of magic. Here they find a group of powerful magicians called the Sleight and a mysterious living map, which tattoos itself onto Hedy's skin and seems to be directing her further underground. And so an extraordinary treasure hunt begins.