When Dr. Olivia Landon receives this anonymous e-mail shortly after broadcasting her controversia...

Who was that man in the Park Service uniform who brought Jack and Ashley Landon into the wilds of...

A baby whale is the latest mammal stranded on the beaches of Acadia National Park. When the Lando...

When a cougar attacks a hiker in Mesa Verde National Park, the Landons have another mystery on th...

Jack can't believe what he's hearing. His sister is being held hostage. Whoever snatched Ashley m...

Grizzly cubs are disappearing from Glacier National Park, and the Landon family must figure out w...

This thrilling series roars back to life with the release of Mystery #13, Night of the Black Bear...

The Landon family is Southbound-headed for Florida to investigate a mysterious illness plaguing e...

Jack and Ashley's search for eight-year-old Sammy has left them hopelessly lost in a twisted maze...

The Landons are in the Caribbean, in Virgin Islands National Park, to figure out what is destroyi...

In this fast-paced adventure, the Landons trail a wounded wolf in Yellowstone National Park. The ...