Calling all Cahills! Announcing a 39 Clues Superspecial adventure - the gang is back, and called to investigate one of their own: Sinead Starling.

For 500 years, the Cahills have been the most powerful family in the world. For 500 years, they've protected the source of their power - the 39 Clues. And for 500 years, they've kept their secrets silent. Until now. This extraordinary stand-alone novel cracks open the Cahill vault to tell the story of the most coveted piece of artwork in the world, a masterpiece that has been the target of seven separate theft attempts: Jan van Eyck’s altarpiece at Ghent.

The Cahill family has a secret. For five hundred years, they have guarded the 39 Clues - thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. If the serum got into the wrong hands, the disaster would rock the world. So certain Cahills have always made it their mission to keep the serum safe, buried, locked away. Until now. Thirteen-year-old Dan Cahill and his older sister, Amy, are the latest guardians of the Clues. They think they've done everything right, but a tiny mistake leads to catastrophe.

Amy and Dan find themselves in a new global race but this time, everything’s different. Those closest to them might be working for the enemy, and Amy and Dan are forced to ask themselves how far they’re willing to go to save the kidnapped Cahills. How much can you risk when there’s no one to trust?

What would happen if you discovered that your family was one of the most powerful in human history? What if you were told that the source of the family's power was hidden around the world, in the form of 39 Clues? What if you were given a choice - take a million dollars and walk away...or get the first Clue? If you're Amy and Dan Cahill, you take the Clue - and begin a very dangerous race.

After angering his father, Zeus, the god Apollo is cast down from Olympus. Weak and disoriented, he lands in New York City as a regular teenage boy. Now, without his godly powers, the 4,000-year-old deity must learn to survive in the modern world until he can somehow find a way to regain Zeus' favor. But Apollo has many enemies - gods, monsters, and mortals who would love to see the former Olympian permanently destroyed.

As the son of Hades, Nico di Angelo has been through so much, from the premature deaths of his mother and sister, to being outed against his will, to losing his friend Jason during the trials of Apollo. But there is a ray of sunshine in his life—literally: his boyfriend, Will Solace, the son of Apollo. Together the two demigods can overcome any obstacle or foe. At least, that's been the case so far . . . Now Nico is being plagued by a voice calling out to him from Tartarus, the lowest part of the Underworld.

Sara Martinez is a hacker. She recently broke into the New York City foster care system to expose her foster parents as cheats and lawbreakers. However, instead of being hailed as a hero, Sara finds herself facing years in a juvenile detention facility and banned from using computers for the same stretch of time. Enter Mother, a British spy who not only gets Sara released from jail but also offers her a chance to make a home for herself within a secret MI5 agency. Operating out of a base in Scotland, the City Spies are five kids from various parts of the world.

Fiercetooth, a NightWing obsessed with what could have - and should have - been. Deathbringer, desperate to prove himself as the next great NightWing assassin. Six-Claws, a loyal SandWing, who will soon find that loyalty comes with a price. Foeslayer the NightWing, a dragon in love turned kidnapper, and Prince Arctic of the IceWings, a runaway turned captive. In these four short stories, dig deeper into the world of Pyrrhia to discover what really happened.

Since their mother's death, Carter and Sadie have become near strangers. While Sadie has lived with her grandparents in London, her brother has traveled the world with their father, the brilliant Egyptologist, Dr. Julius Kane. One night, Dr. Kane brings the siblings together for a "research experiment" at the British Museum, where he hopes to set things right for his family. Instead, he unleashes the Egyptian god Set, who banishes him to oblivion and forces the children to flee for their lives.

After an escaped kangaroo starts a fire that burns down his house, Teddy Fitzroy accepts an invitation to go to Malibu with his girlfriend, Summer, and her mother, Kandace. He’s hoping to spend some time relaxing on the beach, but wherever Teddy goes, trouble isn’t far behind. First, a massive dead whale has washed up on the beach—and before anyone can determine what killed it, it explodes. Doc, the head vet from FunJungle, suspects something fishy is going on and ropes Teddy and Summer into helping him investigate.

In a discontented kingdom, civil war is brewing. To unify the divided people, Conner, a nobleman of the court, devises a cunning plan to find an impersonator of the king's long-lost son and install him as a puppet prince. Four orphans are recruited to compete for the role, including a defiant boy named Sage. Sage knows that Conner's motives are more than questionable, yet his life balances on a sword's point - he must be chosen to play the prince or he will certainly be killed. But Sage's rivals have their own agendas as well.

Everything I’d known about the world was a lie. On my thirteenth birthday, I, Alcatraz Smedry (yes, I got named after a prison, don’t ask), received my inheritance: a bag of sand. And then I accidentally destroyed my foster parents’ kitchen. It’s not my fault, things just break around me, I swear! I thought the sand was a joke until evil Librarians came to steal it. You’re probably thinking, “Librarians are nice people who recommend good books,” but that’s just what they want you to think!

When best friends Dak Smyth and Sera Froste stumble upon the secret of time travel - a hand-held device known as the Infinity Ring - they're swept up in a centuries-long secret war for the fate of mankind. Recruited by the Hystorians, a secret society that dates back to Aristotle, the kids learn that history has gone disastrously off course. Now it's up to Dak, Sera, and teenage Hystorian-in-training Riq to travel back in time to fix the Great Breaks . . . and to save Dak's missing parents while they're at it.

Middle school is hard. Solving cases for the FBI is even harder. Doing both at the same time - well, that's just crazy. But that doesn't stop Florian Bates! Get to know the only kid on the FBI director's speed dial - and several international criminals' most wanted lists - in this adventurous series that School Library Journal says combines "elements of Alex Rider, James Bond, and Sherlock Holmes".

Logan Willis’s life is falling apart: he lost his job and found out that his wife is cheating on him all in the same day. Thinking that his world has ended, Logan checks into a hotel and turns on the TV to see that he's not far wrong - radio telescopes have detected mysterious signals coming from inside our solar system, and the source is moving toward us at over 500 miles per second. The media concludes that these signals must be of an alien origin. Still reeling from the news, Logan gets a phone call from his brother-in-law.

NYPD detective Paul Donner and his wife Elise were killed in a hold-up gone wrong. Fifty years later, Donner is back: revived courtesy of the Shift. Supposedly the unintended side-effect of a botched biological terrorist attack and carried by a ubiquitous retrovirus, the Shift jump-starts dead DNA and throws the life cycle into reverse, so reborns like Donner must cope with the fact that they are not only slowly youthing toward a new childhood, but have become New York's most hated minority.

Charles "Jay" Tice was a legend throughout the world of international intelligence. But secretly he was also a traitor, reputedly selling information that will seriously compromise the security of the United States for decades to come. Since his treachery was exposed, Tice has been kept under strict surveillance in a maximum security prison. Then one morning, his cell is discovered empty. Jay Tice has vanished - without tripping an alarm or leaving any trace of his passing.

Matt Hollis is the current wielder of the holy weapon, DÄMOREN. With it, he stalks and destroys demons. A secret society called the VALDUCANS has taken an interest in Matt's activities. They see him as a reckless rogue - little more than a "cowboy" corrupted by a monster - and a potential threat to their ancient order. As knights and their sentient weapons begin dying, Matt teams up with other hunters of his kind such as LUIZA, a woman with a conquistador blade; ALLAN, an Englishman with an Egyptian khopesh; MALCOLM, a voodoo priest with a sanctified machete; and TAKAIRA, a naginata-swinging Samurai.

Modern gods and goddesses, remote, revered - and like the pantheon of heroes and heroines of ancient myth - possessing great power tempered with flaws. Now, find within this anthology great tales by gifted and award-winning authors who move superheroes from the four-color panels of comic books to the fantastic pages of fiction, stories that will remind anyone who ever wanted to wear a cape or don a cowl of the extraordinary powers of the imagination!

A devastated Earth's last hope is found in Pearls: small, mysterious orbs that fall from space and are capable of supplying enough energy to power entire cities. Battling to control the Pearls are the Skyship dwellers -political dissidents who live in massive ships in the Earth's stratosphere - and the corrupt Surface government.

When thirteen-year-old Ronan Truelove’s seemingly ordinary mom snatches him from school, then sets off on a high speed car chase, Ronan is shocked. His quiet, nerdy dad has been kidnapped? And the kidnappers are after him, too? His mom, he quickly learns, is anything but ordinary. In fact, she’s a member of an ancient order of knights, the Blood Guard, a sword-wielding secret society sworn to protect the Pure — thirty-six noble souls whose safety is crucial if the world as we know it is to survive.

They call me the Spider. I'm the most feared assassin in the South -- when I'm not busy at the Pork Pit cooking up the best barbecue in Ashland. As a Stone elemental, I can hear everything from the whispers of the gravel beneath my feet to the vibrations of the soaring Appalachian Mountains above me. My Ice magic also comes in handy for making the occasional knife. But I don't use my powers on the job unless I absolutely have to. Call it professional pride.

Rob Dunbar is the world's best history professor. And with good reason: he's been alive for 3,000 years, keeping his existence a secret since before the days of Athens. But a stranger named Baxter has a better use for Rob's vast expertise. Baxter's looking to found a mining company in the Asteroid Belt. In exchange for Rob's help, he'll try to unravel the mystery of Rob's origin. As they're getting their outfit off the ground, they come under covert attack by HemiCo, a powerful Mars-based corporation.

It's 1948, and World War II has just ended. Berlin is in pieces, torn apart by bullets, bombs, and bloodshed. But a particular scientist has survived - one with vital knowledge of an ancient weapon. When Endgame spies learn of the news, Boone, a Cahokian, and Ariadne, a Minoan, are each sent undercover to find the scientist amid the snowy rubble. But when their paths intertwine, the last thing they expect is to let their guards down and work together.

Growing up, Bianca St. Ives knew she was different from all her friends. Instead of playing hopscotch or combing her dolls' hair, she studied martial arts with sensei masters and dismantled explosives with special-ops retirees. Her father prepped her well to carry on the family business. Now a striking beauty with fierce skills, the prodigy has surpassed the master.

In the middle of America, Amy Lewis is on her way to her grandma's house. She's being chased by a very bad wolf. Galaxies away, Loki is waking up in a prison cell, strangely without a hangover and with no idea what he's done wrong - this time, anyway. But he does know that Thor is hiding something, Odin is up to something wicked, and there seems to be something that he's forgotten....

When you have to kill the same terrorist twice in one week there’s either something wrong with your world or something wrong with your skills - and there’s nothing wrong with Joe Ledger’s skills. And that’s both a good and a bad thing. It’s good because he’s a Baltimore detective who has just been secretly recruited by the government to lead a new task force created to deal with the problems that Homeland Security can’t handle....

Over ten years ago, Air Force major Nick Baron was part of a failed special ops mission that left a B-2 stealth bomber at the bottom of the Persian Gulf. Now, leading his men - the Triple Seven Chase team - Baron must find the bomber and dispose of it for good before any unfriendly nation can steal the onboard technology for its own purposes. But as the team embarks on its mission, there are greater dangers waiting.

The Seven Wonders adventures continue in this bind-up of The Select and The Orphan. The Select tells the story of thirteen-year-old Burt Wenders, the first documented carrier of the G7W gene, and his fated voyage to the island that would eventually come to house the Karai Institute. In The Orphan, learn the story of Daria, orphaned at a young age and enslaved by the Babylonians, and her valiant battle to escape the only city she's ever called home. These titles are together for the first time ever.

At only seventeen years old, Ian Kabra is head of the Cahills, the most powerful family in the world. He has presidents on speed dial, generals at his beck and call. Ian knows he's an ideal leader and the only man for the job. There's just one small problem: He's already messed up big time. A Cahill from the past calling himself the Outcast has risen to challenge Ian with an impossible test. The Outcast has re-created four of history's greatest disasters and dared Ian to stop him.

The Cahill family has a secret. For five hundred years, they have guarded the 39 Clues - thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. If the serum got into the wrong hands, the disaster would rock the world. So certain Cahills have always made it their mission to keep the serum safe, buried, locked away. Until now. Thirteen-year-old Dan Cahill and his older sister, Amy, are the latest guardians of the Clues. They think they've done everything right, but a tiny mistake leads to catastrophe.

Calling all Cahills! Announcing a 39 Clues Superspecial adventure - the gang is back, and called to investigate one of their own: Sinead Starling.

For 500 years, the Cahills have been the most powerful family in the world. For 500 years, they've protected the source of their power - the 39 Clues. And for 500 years, they've kept their secrets silent. Until now. This extraordinary stand-alone novel cracks open the Cahill vault to tell the story of the most coveted piece of artwork in the world, a masterpiece that has been the target of seven separate theft attempts: Jan van Eyck’s altarpiece at Ghent.

What would happen if you discovered that your family was one of the most powerful in human history? What if you were told that the source of the family's power was hidden around the world, in the form of 39 Clues? What if you were given a choice - take a million dollars and walk away...or get the first Clue? If you're Amy and Dan Cahill, you take the Clue - and begin a very dangerous race.