Real kids, real places

While learning about the Underground Railroad, four young people get the chance to solve a mystery as well.

Christina, Grant, Mimi, and Papa head for Hollywood, and run into a mystery complete with Hollywood glamour, historic handprints, a "waxy" museum, and an earthquake.

Grant, Christina, and their friends accompany Mimi and Papa to Niagra Falls and find a mystery to solve.

Siblings Grant and Christina travel to the Hawaiian Islands with their grandparents, Mimi and Papa, where they learn about the history of Hawaii, but as they explore volcanoes and beaches, they uncover a mystery.

Along with new friends Allison and David,Grant and Christina spy b-b-b-bouncing barrels...discover a secret room...visit a famous fort... ride a Ferris wheel...learn about locks...and solve a soggy mystery! Look out! There's another barrel coming down the falls! But what's in it? Hey, don't forget your raincoat! You're going to get wet!.

Christina, Grant, Derian, and C.F. Thomas learn about the history of Boston and the Boston Marathon as they try to locate their schoolteacher cousin who has disappeared in the middle of the race.

Christina, Grant, Mimi, and Papa travel to Jamestown, Virginia, where an archaeologist is accused of stealing priceless "skeletal remains.".

Christina, Grant, April, and Denise find themselves involved in a Christmas mystery that starts in Washington, D.C., and ends in the Oval Office.

Four children learn about the Underground Railroad and the heroes and slaves who found their way to freedom along it.