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?

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

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.

Penguin presents the unabridged, downloadable audiobook edition of The Hidden Oracle: The Trials of Apollo, Book One, by Rick Riordan, read by Robbie Daymond. How do you punish an immortal? By making him human. After angering his father, Zeus, the god Apollo is cast down from Olympus. Weak and disorientated, he lands in New York City as a regular teenage boy.

Magnus Chase has always been a troubled kid. Since his mother's mysterious death, he's lived alone on the streets of Boston, surviving by his wits. One day he's tracked down by an uncle he's never met - who tells him an impossible secret: Magnus is the son of a Norse god. The Viking myths are true. The gods of Asgard are preparing for war. Trolls, giants and worse monsters are stirring for doomsday. To prevent Ragnarok, Magnus must search the Nine Worlds for a weapon that has been lost for thousands of years.

The former God Apollo is having a pretty rough time of it. Well, for one thing, he's called Lester. But being an awkward mortal teenager is the least of his worries. Though he and his friends (some of them) have emerged from the Burning Maze, they still have a triumvirate to defeat, oracles to rescue and prophecies to decipher so that the world may be saved, and Lester can become Apollo once again. But right now, Caligula is sailing to San Francisco to deal with Camp Jupiter personally, and they have to get their first. Or risk its destruction.....

Myles and Beckett Fowl are twins, but the two boys are wildly different. Beckett is blonde, messy and sulks whenever he has to wear clothes. Myles is impeccably neat, has an IQ of 170 and 3-D prints a fresh suit every day - just like his older brother, Artemis Fowl. A week after their 11th birthday the twins are left in the care of house security system NANNI for a single night. In that time, they befriend a troll on the run from a nefarious nobleman and an interrogating nun, both of whom need the magical creature for their own gain.... 

Mysterious incidents are wreaking havoc throughout Camp Jupiter. And if the Romans don't find out who - or what - is behind the episodes soon, the Twelfth Legion could implode. Suspicion falls on Claudia, the Fourth Cohort's newest probatio. To find out the truth, see through Claudia's eyes the crime scenes and watch as the bizarre events unfold - even when she discovers a secret that holds the key to Camp Jupiter's safety.... 

Twelve-year-old villain, Artemis Fowl, is the most ingenious criminal mastermind in history. His bold and daring plan is to hold a leprechaun to ransom. But he’s taking on more than he bargained for when he kidnaps Captain Holly Short of the LEPrecon (Lower Elements Police Reconnaissance Unit). For a start, leprechaun technology is more advanced than our own. Add to that the fact that Holly is a true heroine and that her senior officer Commander Root will stop at nothing to get her back and you’ve got the mother of all sieges brewing!