Real kids, real places

Christina, Grant, Mimi, and Papa run into mystery on the islands of Hawaii.

Christina, Grant, Mimi, and Papa snowmobile into Yellowstone National Park to encounter mud pots, geysers, bison, beauty, bears, volcanic action, and a mystery of historic proportions.

While visiting the Kentucky Derby, a group of young friends start piecing together pieces of a puzzle involving a missing horse and missing jockeys.

Four children hunt for the Wright Brothers' missing plane in the sand dunes called Kill Devil Hills.

Christina, Grant, Mimi, and Papa go to Charleston, South Carolina, in search of missing Aunt Lulu, and learn about Fort Sumter and the first shots fired in the Civil War as they solve a mystery of mayhem during a rare winter blizzard.

Christina, Grant, Mimi, and Papa travel to Wyoming's Devils Tower and climb into a "towering" mystery involving Native Americans, precocious prairie dogs, fascinating footprints, Unidentified Flying Objects, and aliens?.

Christina, Grant, Mimi, and Papa find themselves in the middle of a mystery in Death Valley, California with Aunt Erin, a creepy castle in the middle of nowhere, a ghost (or not?), temperatures hotter than a Fourth of July firecracker, and more!.

Christina, Grant, Mimi, and Papa visit the peaceful Cape Cod National Seashore, only to find themselves awash in a mystery filled with troubling tire tracks, shifting sand dunes, a lonely lighthouse, and warnings of an approaching Nor'easter.

Christina and Grant with the help of some friends help catch the thief who stole a valuable moon rock from the Space Center Houston.

Four young friends manage to find themselves involved in mystery even when they visit the Grand Canyon.