Seventy years after a murderous madman aboard the doomed Hindenburg tosses out a safe containing a dangerous secret, Philip Mercer teams up with field researcher Cali Stone to figure out why an African village is experiencing high rates of cancer.

In 1904 an earthquake shook Oslo. Its epicenter was in the Oslo Rift which runs directly through the Norwegian capital. There are recorded quakes from the rift on a daily basis and geologists cannot be sure, but arguments indicate that people can expect major future earthquakes in this area.

"Zach Wells, a laconic geolist-slash-paleobiologist, has the trappings of a comfortable life, yet is not contented. He's expert in the geological history of a cave in the Grand Canyon, but less so where his wife and daughter are concerned. And when his daughter develops unusual vision problems and has a seizure, the world of this family of three crumbles. Powerless in the face of his daughter's slow deterioration, Wells finds a note asking for help...

An American geologist flies to Antarctica to participate in a project at the United States Research Base. Once there, he teams up with arctic guide Jerry Shepard and his best friend, Cooper. The scientist soon discovers that Shepard also has eight other valuable friends -- a pack of sled dogs he's worked with for years, who have rescued him from a number of tight spots. As the three men explore a frozen mountain region, an unexpected accident coupled...

"As the daughter of an alchemist, Petra Dee has faced all manner of occult horrors--especially since her arrival in the small town of Temperance, Wyoming. But she can{u2019}t explain the creature now stalking the backcountry of Yellowstone, butchering wolves and leaving only their skins behind in the snow. Rumors surface of the return of Skinflint Jack, a nineteenth-century wraith that kills in fulfillment of an ancient bargain. The new sheriff in...

Disaster strikes the United States when a 10.5 magnitude earthquake hits the Pacific Northwest causing the West Coast to separate from the rest of the continent. The situation is made worse by aftershocks and a tsunami. Now it's up to one geologist to save the coast and the 50 million people who live there from annihilation.

"Sinking thousands of feet below the surface of the earth in the Leister Deep copper mine in Minnesota, Philip Mercer rides a series of heavy-duty elevators to visit his old friend and mentor, Abraham Jacobs. Jacobs has led a research team to the deepest section of the mine for a groundbreaking study into climate change and cosmic rays. But as Mercer approaches the bottom, he is stunned to hear the unmistakable report of automatic gunfire in the massive...

1890s. Emily Carver is tired of following her gold-hunting father from one mining camp to another: she wants a home where she can put down roots. When she realizes she's losing her heart to the intriguing new man in their Montana camp, she is afraid that love will only result in disappointment and heartache. Caeden Thibault is a young geologist cataloging minerals indigenous to the state. He avoids romantic entanglements, fearing he might become like...