Throughout the hunt for the 39 Clues, Amy and Dan have encountered some of the darkest aspects of history... and had to deal with the role their family played. But are they ready for the truth? In this thrilling ninth installment, Amy and Dan hit the high seas as they follow the trail of some infamous ancestors to track down a long lost treasure. However, the real prize isn't hidden in a chest. It's the discovery of the Madrigals' most dangerous secret...

Chronicles the first Vesper attack on Jan van Eyck's altarpiece at Ghent in the 1600s, then jumps to WWII and young Grace Cahill's desperate bid to save the masterwork from the Nazis.

When eleven-year-old Gregor and his two-year-old sister are pulled into a strange underground world, they trigger an epic battle involving men, bats, rats, cockroaches, and spiders while on a quest foretold by ancient prophecy.

The exiled Princess Shiori must unravel the curse that turned her six brothers into cranes, and she is assisted by her spurned betrothed, a capricious dragon, and a paper bird brought to life by her own magic.

With goblins, trolls, and the house boggart all trying to get them, the Grace children turn to Great Aunt Lucinda for help.

The arrival of a new little brother has his big sister singing the blues.

Carter Kane and his sister must prevent the chaos snake Apophis from breaking free in a few days' time or the world will come to an end. To have any chance of battling these Forces of Chaos, the Kanes must revive the sun god Ra.

After seven members of their family are kidnapped by an organization called the Vespers, Dan and Amy Cahill must race against time to track down an ancient map to pay as ransom to bring the hostages home.

Roar! It's not bad enough that Mom and Dad are heading to California, leaving Judy and Stink with Aunt Awful (er, Opal), but now Judy's two best friends are going Splitsville, too. Just when it looks like her summer is going to be BOR-ing - eureka! - Judy comes up with the most thrill-a-delic plan ever. Get ready for a race involving tightrope walking, Scream Monster riding, and way more! Add in a treasure hunt for Judy's teacher, a midnight stakeout,...

A boy named Lee sings about all the miserable aspects of being a middle child.