Christina and Grant travel to Jamestown, Virginia, where they learn about colonial America and try to solve a mystery involving an archaeologist accused of stealing bones.
Christina, Grant, Juan, and Rose find themselves in big trouble while trying to solve a mystery at the Alamo that their mystery book-writing grandmother says does not exist.
Michele, Michael, Jo Dee, and Brian set off on an adventure in North Carolina's pirate haunt port town of Bath, where they try to recover a special prop and save an outdoor drama while learning about the Golden Age of piracy.
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 follow their mad-scientist father to some of the country's most earthquake-prone locations, learning about past earthquakes and the possibility of future quakes.