Jack, Ashley, and their parents visit Hawaii where they meet a Vietnamese boy who is going to live with his American grandfather whom he has never met, and are pursued by the Goddess Pele.

While visiting the Everglades National Park with their parents, the Landon children uncover the mystery of dying manatees and learn important lessons about the natural environment.

The Landon family travels to Glacier National Park to investigate why grizzly bear cubs are disappearing and become involved with a ten-year-old Mexican runaway boy.

The Landon family makes a trip to Death Valley National Park accompanied by a mysterious new foster child, fourteen-year-old Leesa Sherman.

While their mother investigates a series of bear attacks in and near Gatlinburg, Tennessee, Jack and Ashley learn about country music and Cherokee people from two new friends, one of whom is keeping a secret.

Chuck Bender is running an archaeology field school for college students in Colorado's Rocky Mountain National park when the summer takes a deadly turn - Chuck must defend one of his team leaders from false accusations and finds himself in the crosshairs of an unknown murderer. Upon discovering a graveyard of majestic Rocky Mountain rams - all missing their valuable horns - Chuck knows he's dealing with a desperate killer who will stop at nothing....

"Archaeologist Chuck Bender arrives with his family in Yosemite Valley to study the 150-year-old murders of a pair of gold prospectors in the midst of preparations for the annual Yosemite Slam rock-climbing competition and a reunion with his old climbing buddies. The trip quickly turns threatening when one climber never shows up, climbing equipment fails, and Chuck and his wife, Janelle Ortega, are suspected in the shocking, present-day death of one...

"Hounded by false accusations of murder, archaeologist Chuck Bender and his family risk their lives to track down an unknown killer on the loose in a rugged canyon on the remote western edge of Mesa Verde National Park, where ancient stone villages and secret burial sites, abandoned centuries ago by the Ancestral Puebloan people, harbor artifacts so rare and precious they're worth killing over"--Provided by publisher.

"Brought in as chief investigator when a party of campers go missing, 32-year-old Felicity Harland must place her trust in a Navy SEAL turned park ranger when the investigation takes them from the wilderness to the streets of Los Angeles where the grisly truth comes to light"--

After camping in Rocky Mountain National Park, Jake and his friends travel to the Great Sand Dunes in southern Colorado. Exploring the heart of the dunes, they stumble upon something both unexpected and dangerous. Through more twists and turns, Jake's friendships and integrity are tested by choices that will demand smarts and courage. The mystery unfolds as Jake, Amber, and Wes learn about survival skills, natural history, integrity, character, and...