Carole Marsh

Christina, Grant, Mimi, and Papa head to the Great Smoky Mountains and end up in an A+ Appalachian mystery complete with an eerie mountain haze, spectacular scenery, a boisterous bear, confounding clues, and mystifying folklore!

Mimi, Papa, Christina, and Grant make an emergency landing on Diamond Shoals off the North Carolina coast and encounter a mysterious light on the beach.

Christina, Grant, Mimi, and Papa find themselves in the middle of a mystery in Death Valley, California. There's 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 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?

Discusses efforts to find intelligent life on other planets and theories on this topic and describes UFO sightings and other phenomena that are given as evidence of extraterrestrial visitors among us.

Christina and Grant, along with their grandmother go on a trip to "Down Under" and discovers a lot of surprises and mysterious activities.

Mimi, Papa, Cristina, and Grant find a series of clues that helps them to discover where a stolen statue from the Louvre Museum in Paris might be hidden.