Gary Hass thought Patagonia would be the perfect eco-tourism getaway. Crystal-clear lakes, jagged peaks, and endless trails-everything he and his new bride, Kelly, needed to leave the world behind. But deep in Chile's remote wilderness, paradise hides a predator.

A serial killer is stalking the backcountry, choosing female hikers as quarry and hunting them for sport. When Kelly vanishes on a routine day hike, Gary realizes the nightmare has already begun. With no cell service, no help, and the killer circling closer, Gary must turn hunter himself-racing against the unforgiving terrain and a madman who knows every shadow and every stream.

In the savage beauty of southern Chile, one man will discover how far he'll go to save the woman he loves¿ and how thin the line is between hunter and hunted.