The "Jewels" of the Martha Washington Middle School team are focused on the upcoming quiz bowl in New York City but when they discover that the Atkinson Preparatory School Rivals may be planning a diamond heist, they set out to foil the theft.
When they travel by train across America, Christina, Grant, Mimi, and Papa find themselves facing mysterious mishaps, spooky surprises, and treacherous tunnels.
Famous detective Sherlock Holmes and his sidekick Dr. Watson investigate when the blue gem stolen from a countess winds up in a goose. Includes clues that reveal how Holmes solved the case.
Mandie doesn't know what to give her friends for Christmas. Then gifts begin to mysteriously appear on her doorstep, gifts that would be perfect for her friends. Where are the gifts coming from?.
Nancy Drew and her father are kidnapped after discovering an ancient city buried under a large estate in Turkey and must find a way to escape and stop a corrupt archaeologist who is plotting to steal the city's artifacts.
The Boxcar Children, spending the summer at Mystery Ranch with the Aunt Jane, try to help when their friend Mike Wood's house burns down and he is blamed for starting the fire.
Uncle Ted gets Scooby-Doo and his friends to help find dinosaur bones for the museum, but the bones turn up missing. Can Scooby and his friends find the bones?.
Curie and Nick Masters follow their mad-scientist father to some of the country's most tornado-prone locations, learning about past tornadoes and the possibility of future ones.
Curie and Nick Masters join their scientist father as he studies dangerous hurricanes. Includes facts, trivia, and safety information about hurricanes.
