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.

Five teenagers are hired by Disney as actors for its newest technology, Daylight Hologram Images. Soon, the kids are pitted against Disney villains and witches that threaten both the future of Walt Disney World and the stability of the world outside the park's walls.

Santa Claus is missing, and a host of arctic animals searches for him in the snow.

"When horror writer Jake Konig suddenly disappears, Bryce and Ashley Timberline get caught in a mystery as scary as one of Konig's novels. A mysterious message on the writer's computer warns the twins to stay clear of Konig and his work. What's the real story?"--

On a cold winter day in Chicago, Early's father disappeared, and now she, her mother and her brother have been forced to flee their apartment and join the ranks of the homeless--and it is up to Early to hold her family together and solve the mystery surrounding her father.

Everything stops making sense for extreme surfer Kevin Taylor after his parents die in a plane crash. When Kevin disappears, leaving only a cryptic note, his best friends Luca and Esme have no choice but to try and find him. Their journey takes them to the coast of Panama, where they must confront unfriendly locals, a surfer who seems bent on destroying them, and monster waves. As their hope dwindles and time runs out, the mystery of what really happened...

Years after Travis's parents die in a car crash and he and his younger sister, Amanda, are separated, Travis sets out to search for her at the risk of losing an opportunity for a future baseball career.

Middle school journalist Samantha Sanderson and her tech-savvy friend Makayla investigate the disappearance of their friend Tam Lee.

When her younger brother disappears, sixteen-year-old Jennie McGrady is suspicious of her new neighbor and she puts herself in danger when she tries to find her brother before it is too late.

When Charlotte, a long-term fan of Sherlock Holmes, moves into his former apartment on Baker Street then disappears along with a special invention, her neighbors and fellow detectives Griffin and his uncle try to find her in a race against the clock that bends time itself.