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When Enola learns of a missing left-handed artist, she uses a series of clever disguises to brave lurking dangers and follow cryptic clues that lead to the young Lady Cecily.

The younger sister of Sherlock and Mycroft Holmes, 14-year-old Enola is no slouch herself when it comes to sleuthing. This time, she must team with Sherlock to rescue Lady Cecily Alistair from a dreadful arranged marriage.

Spud is scatty and accident-prone, but good with gadgets. Star is super-smart, and ready to pounce. Together they’re Spy Pups, following hot in the paw prints of mum Lara (that’s Licensed Assault and Rescue Animal to you). Spud and Star are on a daredevil rescue mission to save Lara from the evil Mr Big! He’s been in prison plotting his revenge and unless the pups can outwit him, Lara is in deadly danger. Can the Spy Pups jump into action and save their mum?

Adventure-loving penguin Jackson dreams of being a secret agent like his Uncle Bryn, who works for the Frosty Bureau of Investigation. Jackson and his gadget-inventing best friend, Quigley, might officially be too young to join the FBI, but they aren’t going to let that stop them! They just need to come up with the right plan to prove they are worthy. But when one of Q’s inventions goes dangerously wrong, Jackson suddenly finds himself dropped right in the middle of an FBI stakeout. There’s fishy business afoot at the city’s aquarium....

They call themselves SYLO and they are a secret branch of the U.S. Navy. SYLO's commander, Captain Granger, informs Pemberwick residents that the island has been hit by a lethal virus and must be quarantined. Tucker believes there’s more to SYLO’s story. He was on the sidelines when the high school running back dropped dead with no warning. He saw the bizarre midnight explosion over the ocean, and the mysterious singing aircraft that travel like shadows through the night sky. He tasted the Ruby - and experienced the powers it gave him - for himself.

The Chameleon Wore Chartreuse: Chet Gecko loves a good mystery. Almost more than he loves his fee - stinkbug pie. So when fellow fourth grader Shirley Chameleon asks him to find her missing brother, Billy, Chet expects the case to be as easy as pie. But Billy's disappearance is part of a larger plot. The Mystery of Mr. Nice: Most folks know him as the best lizard detective at Emerson Hicky Elementary, but it's not all knuckles and know-how with Chet Gecko. He's also got his artistic side. If it wasn't for his art, he might never have been sent to Principal Zero's office, where he stumbled onto the mystery of Mr. Nice.

In 11 Birthdays, Amanda and her best friend, Leo, stopped speaking to each other for a year. What happened when they started talking again led to the adventure of a lifetime. Now they haven't spoken for another year - and the result is even more bizarre. This time it's not just about them. Their friend's little sister, Grace, has fallen into a strange frozen state on her tenth birthday. Amanda and Leo quickly realize that Angelina D'Angelo - the mysterious old woman behind all of the magical happenings in Willow Falls - is involved.

A mysterious note from Merlin sends Jack and Annie to Paris, France, for the 1889 World's Fair. Their mission: find four "new magicians" and protect them from an evil sorcerer who plans to kidnap them and steal the secrets of their magic. When Jack and Annie arrive at the foot of the Eiffel Tower, they find exhibits from all over the world and thousands of people attending the fair!

Daisy Wells and Hazel Wong are in Egypt, where they are taking a cruise along the Nile. They are hoping to see some ancient temples and a mummy or two; what they get, instead, is murder. Also travelling on the SS Hatshepsut is a mysterious society called the Breath of Life: a group of genteel English ladies and gentlemen, who believe themselves to be reincarnations of the ancient pharaohs. Three days into the cruise their leader, Theodora Miller, is found dead in her cabin, stabbed during the night.

Join Frank and Joe Hardy on their very first mystery adventure in The Tower Treasure! When a daring robbery leaves their friend’s family in dire straits, the Hardy boys take it upon themselves to uncover the truth and clear his name. Their search leads them to hidden clues, suspicious characters, and a mysterious old tower that holds secrets of its own.

Everyone tells Sophie that she was orphaned in a shipwreck – found floating in a cello case on the English Channel on her first birthday. But Sophie is convinced her mother also survived. When the Welfare Agency threatens to separate her from her guardian and send her to an orphanage, Sophie takes matters into her own hands, starting with the only clue she has – the address of a cello-maker in Paris.

Twelve-year-old Myrtle Hardcastle has a passion for justice and a highly unconventional obsession with criminal science. Armed with her father’s law books and her mum’s microscope, Myrtle studies toxicology and keeps abreast of the latest developments in crime scene analysis. When her next-door neighbor, a wealthy spinster and eccentric breeder of rare flowers, dies under mysterious circumstances, Myrtle seizes her chance. With her unflappable governess, Miss Ada Judson, by her side, Myrtle takes it upon herself to prove Miss Wodehouse was murdered.

Fresh off recovering a billion-dollar ruby and losing the criminal who stole it, John Boarhog and Inspector Toadius McGee are soaring high on a new adventure. Hoping to intercept the Mauve Moth before they execute their next great heist, Toadius and John book passage on Her Majesty’s Royal Air Armada—a luxury cruise liner airship. But alas, there will be no clear skies ahead. A committee from the Society of Sleuths (S.O.S) is also aboard, ready to put John through his first trial to gain full membership, despite Toadius’s objections.

After a merciless winter, spring has sprung in 1880 Stockholm, and the city awaits the arrival of the SS Vega, the first ship to have sailed the Northeast Passage. Life is busy at the orphanage, but twelve-year-old Mika quickly notices that the older orphans are up to something—and it doesn’t look good. When Constable Hoff approaches her with information about thefts around the city, Mika becomes even more concerned about what the other kids are up to—and what they might be planning for the Vega celebration.

It’s 1880, and in the frigid city of Stockholm, death lurks around every corner. Twelve-year-old Mika knows that everyone in her orphanage will struggle to survive this winter. But at least the notorious serial killer the Night Raven is finally off the streets…or is he? Mika is shocked when a newborn baby is left at the orphanage in the middle of the night, by a boy with a cryptic message. Who is he? And who is this “Dark Angel” he speaks of? When a detective shows up, Mika senses something even more sinister is going on.

King and Kayla are going to a sleepover at Jillian and Thor’s house. They usually sleep downstairs, but not this time. Jillian says there’s a ghost down there!

Arthur loves video games, but he never thought he'd be stuck in one! With only one life left, David must use all of his video game knowledge if he's going to survive.

The number one best-selling Magic Tree House series is ready to whisk you away through time with Jack and Annie! Camp Time in California: The magic tree house whisks Jack and Annie to the Yosemite National Park in 1903. They are surprised to join John Muir and President Theodore Roosevelt on the most significant camping trip in conservation history! Sunlight on the Snow Leopard: The magic tree house takes Jack and Annie to Nepal with a mission to find...a ghost! As frightening as that sounds, the mission is clear: Find the ghost, and save the world.

In the prequel to the number one bestselling Alex Rider series by Anthony Horowitz, contract killer Yassen Gregorovich is given orders to kill Alex. But Yassen knows a secret from the past that connects him to the fourteen-year-old spy. What is it that makes one of them choose to do evil, and what does it take to turn him into a killer?

One week before All Hallows' Eve, in the tiny mountain town of Nevermore, an unexpected party invitation is issued to an eccentric group of townspeople. Among them is an heiress, a spy, and an alchemist. There is also a thief, an impostor, and a hypnotist. There is a child, too—perhaps like you—who keeps his eyes and ears wide open at all times. Each of them has a story. Each of them knows a secret. But which of them is responsible for the curious vanishing of Beatrice Willoughby?