Relates the exploits of the four Alden children as they locate a missing man.

When an elderly friend is injured, the Alden children offer to help him with his window-washing business in their small town of Greenfield and agree to help him solve a riddle that has arrived in a mysterious invitation.

While exploring the caves around Dragon's Mouth Cavern, a series of unusual and somewhat frightening events convinces the Alden children that someone does not want them around.

"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 and, even more shockingly, the true identity of the mysterious man in black"--Amazon.com.

While working with the Australian Secret Service on a dangerous mission, teenaged spy Alex Rider uncovers information about his parents.

"One summer morning, twelve-year-old Edward Adler, his beloved older brother, his parents, and 183 other passengers board a flight in Newark headed for Los Angeles. Among them are a Wall Street wunderkind, a young woman coming to terms with an unexpected pregnancy, an injured vet returning from Afghanistan, a business tycoon, and a free-spirited woman running away from her controlling husband. Halfway across the country, the plane crashes. Edward...

"This is the tale of an exciting journey along the Silk Road with a young Monk and his newfound guardian, Samir, a larger than life character and the so-called 'Seller of Dreams.' The man is a scammer; his biggest skill being the ability to talk his way into getting what he wants. While that talking did save Monkey's life, it has left a lot of people furious with Samir--furious enough to hire assassins. Monkey decides to try and save Samir from the...

Ba dies in the night; Ma is already gone. Newly orphaned children of immigrants, Lucy and Sam are suddenly alone in a land that refutes their existence. Fleeing the threats of their western mining town, they set off to bury their father in the only way that will set them free from their past. Along the way, they encounter giant buffalo bones, tiger paw prints, and the specters of a ravaged landscape as well as family secrets, sibling rivalry, and...

Believing that she has been sent to Los Angeles by her librarian friend, Lucy Logan, to stop an evil plot by the wealthy Primo Cell, Molly Moon and her friend Roger, orphans with unusual hypnotic powers, find themselves in danger from an unsuspected source.

Alex, a fourteen-year-old spy, has been assigned by the British MI6 to investigate a series of mysterious deaths. He ends up in a boarding school in the Swiss Alps, and finds many strange things are happening to the students.