Eleven-year-old Gopal and his family leave their rural Indian village for life with his uncle in Mumbai, but when they arrive his father goes missing and Gopal ends up locked in a sweatshop from which there is no escape.

Enola Holmes, much younger sister of detective Sherlock Holmes, must travel to London in disguise to unravel the disappearance of her missing mother.

With a neighbors help, twelve-year-old Ford Falcon learns to survive in the harsh world outside the Bubble Cities by scavenging for items to use or trade--skills she needs when her parents unexpectedly go missing.

"12-year-old Lucy Darrington goes on a quest to find her missing father in a remote, magical territory in the Pacific Northwest"--

When their favorite author fails to arrive as scheduled to speak at the local library, the Alden children investigate how he could board a train and never be seen again.

Legally-blind college reporter Mike Mavic hopes to get a story about a body found in Steepleton, believed to be that of long-missing teen Christopher Creed, but finds something odd about the town, including Justin Creed's obsessive drive to learn what really happened to his older brother.

Rob comes to New York to have Jessica help him find his missing sister because of her psychic ability, which she feels she has lost.

In 1942 New York City, fifteen-year-old Iris grieves for her mother who committed suicide and for the loss of her life of privilege, and secretly helps her father with his detective business since he, having lost a leg at Pearl Harbor, struggles to make ends meet.

While attending an amusement park under the new ownership of their friend Daisy, Joe and Frank investigate the disappearance of a patron who was last seen riding a hit attraction, an event that has threatened Daisy's family's livelihood.

"Meet Jack and Max Stalwart, Code Names: Courage and Wisdom. Jack and Max are ordinary kids who become secret agents by night, thwarting evil and saving priceless treasures as they solve mysteries around the world. Destination: Brazil. Secret agents Jack and Max Stalwart are sent to the Amazon jungle to investigate the disappearance of an important Global Protection Force scientist. Soon, they discover that the scientist's disappearance is no accident....