During a trek to Loch Ness, Scotland, a young Charles Darwin encounters a mysterious and terrifying creature that provides a spark for his evolutionary theory.

Almost two hundred years later and across the Channel in Paris, the Eiffel Tower is under attack. Only through detective work, intuition, and a judicious application of high-tech weaponry does former Army combat engineer Tyler Locke prevent a massacre.

What Tyler doesn't know is that the assault is just the beginning of a conspiracy so dark that it not only threatens the lives of those he loves, but could also ignite World War III. Racing against time to uncover Darwin's centuries-old secret, he must solve a series of cryptic clues to find a manuscript that has been so cleverly hidden it hasn't been seen since the Victorian age.

Tyler's quest takes him from the bustling tourist hotspots of Seattle to the splendor of Versailles to the remote Highlands of Scotland in a battle to reveal the shocking truth behind the legend of the Loch Ness monster.