Game warden Joe Pickett is fly-fishing when he stumbles upon the mutilated body of a moose. Whatever--or whoever--attacked the animal was ruthless. Shaken by the sight, Joe starts to investigate what he hopes in an isolated incident. Days later, after the discovery of a small herd of mutilated cattle, Joe realizes this something much more terrifying than he could have imagined. And then the bodies of two men are found within hours of each other, in separate locations, their wounds eerily similar to those found on the moose and cattle. There's a vicious killer, a modern-day Jack the Ripper, on the loose in Saddlestring--and it appears his rampage is just beginning.