A heart-stopping novel of adventure and suspense from #1 New York Times bestselling author James Rollins—the first in his critically acclaimed Sigma Force series

A freak explosion in the British Museum in London ignites a perilous race for an earth-shaking power source buried deep beneath the sands of history. Painter Crowe is an agent for Sigma Force, a covert arm of the Defense Department tasked with keeping dangerous

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A reimagining of the historical La Perouse expedition to circumnavigate the globe for scientific research in 1785 follows the exploits and heartbreaks of the explorers, their loved ones, and the natives and Europeans they encounter against a backdrop of the Enlightenment period.

Sigma Force Commander Gray Pierce makes paradigm-shifting discoveries about human evolution while investigating shadowy figures depicted in Neanderthal cave paintings.

Documents the remarkable expedition undertaken by a group of twelve European adventurer-scientists in the mid-eighteenth century. The team spent years in South America, scaling volcanoes and traversing jungles before they achieved their goal of establishing the exact shape of the Earth by measuring the length of 1 degree latitude at the equator.

The riveting tale of two pioneering botanists and their historic boat trip down the Colorado River and through the Grand Canyon. In the summer of 1938, botanists Elzada Clover and Lois Jotter set off to run the Colorado River, accompanied by an ambitious expedition leader, a zoologist, and two amateur boatmen. The Colorado was famed as the most dangerous river in the world. Journalists proclaimed that the motley crew would never make it out alive....