Jack cant believe what hes hearing. His sister is being held hostage. Whoev...More
When Dr. Olivia Landon receives this anonymous e-mail shortly after broadca...More
Life-threatening accidents keep plaguing the Landon family as they investig...More
Grizzly cubs are disappearing from Glacier National Park, and the Landon fa...More
When a cougar attacks a hiker in Mesa Verde National Park, the Landons have...More
In this fast-paced adventure, the Landons trail a wounded wolf in Yellowsto...More
Award-winning mother-daughter writing team weaves science and mystery into ...More
The Landons are in the Caribbean, in Virgin Islands National Park, to figur...More
A baby whale is the latest mammal stranded on the beaches of Acadia Nationa...More
Jack and Ashley's search for eight-year-old Sammy has left them hopelessly ...More
Who was that man in the Park Service uniform who brought Jack and Ashley La...More
