When the hunt for the 39 clues leads 14-year-old Amy Cahill and her younger brother, Dan, to Japan, their only chance to find the third Clue seems to lie with their unreliable uncle, Alistair Oh. Will they be foolish enough to make an alliance? With a Clue on the line, Amy and Dan might not have a choice. But in the Cahill family, trusting your relatives can get you killed.

Amy and Dan must steal a Clue guarded by thousands of the world’s best-trained soldiers. With their enemies closing in, the brother and sister are separated. Now how will they stand a chance?

The Vespers have ordered Amy and Dan to find a legendary map that belonged to Marco Polo, and the hunt takes them to Eastern Europe where they make a terrifying discovery about one of their supposed “allies.”

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?

Amy and Dan have managed to rescue one of the Cahills kidnapped by the Vespers, but the remaining hostages are still in peril. Their search for the next ransom item leads Amy and Dan to Turkey and then to Italy where a visit to the site of an ancient disaster changes everything. The Vespers are far more dangerous than the siblings ever imagined and, even worse, it looks like they have an undercover mole posing as a Cahill. Amy and Dan have to face the biggest decision of their lives with nowhere to turn... and no one to trust.

A surprising twist brings Amy and Dan back to New England for their first mission on U.S. soil since the beginning of the Clue hunt. But being close to home is anything but a comfort. The siblings have learned that there's a mole in the Cahill organization.... And the traitor is one of their closest confidantes. However, this betrayal is overshadowed when Amy and Dan make an even more devastating discovery: the truth about the Vespers' real plan. Burdened with this terrifying information, Amy and Dan are forced to ask an impossible question: Is it more important to save the hostages...or stop the Vespers?

International best seller David Baldacci pens the stunning conclusion to Cahills vs. Vespers! David Baldacci is the author of 23 books for adults, each of which has become both a national and international best seller.

As a member of the most powerful family history has ever known, 13-year-old Dan Cahill has been shot at, kidnapped, and even thrown into a pit with a deadly snake. He’s survived it all due to luck, smarts, and his older sister, Amy, who always sticks by his side. Now Dan and Amy are facing their greatest threat yet, an enemy who has found a way to use the source of the Cahill family power against them.

The 39 Clues is unstoppable! The bestselling series returns with an adventure spanning four explosive books and a website that places listeners right in the action.

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.

Henry Huggins’s adventures are finally all in one location! Come join Henry on Kilckitat Street as he gets into hijinks – usually with the help of Ribsy and none other than Ramona Quimby. This collection includes: Henry Huggins, Henry and Beezus, Henry and Ribsy, Henry and the Paper Route, Henry and the Clubhouse, and Ribsy.

When Lewis Barnavelt, an orphan, comes to stay with his Uncle Jonathan, he expects to meet an ordinary person. But he is wrong. Uncle Jonathan and his next-door neighbor, Mrs. Zimmermann, are both witches! Lewis is thrilled. At first, watching magic is enough. Then Lewis experiments with magic himself and unknowingly resurrects the former owner of the house: a woman named Serenna Izard. It seems that Serenna and her husband built a timepiece into the walls - a clock that could obliterate humankind. And only the Barnavelts can stop it!

Heather and Picket are extraordinary rabbits with ordinary lives until calamitous events overtake them, spilling them into a cauldron of misadventures. They discover that their own story is bound up in the tumult threatening to overwhelm the wider world.

Katniss Everdeen, girl on fire, has survived, even though her home has been destroyed. Peeta has been captured by the Capitol. District 13 really does exist. There are rebels. There are new leaders. A revolution is unfolding. It is by design that Katniss was rescued from the arena in the cruel and haunting Quarter Quell, and it is by design that she has long been part of the revolution without knowing it. District 13 has come out of the shadows and is plotting to overthrow the Capitol. Everyone, it seems, has had a hand in the carefully laid plans - except Katniss.

Never turn your back on the Cahills.... The most powerful family history has ever known returns with a vengeance in The 39 Clues: Doublecross! Confidential until August 2015!