61 Hours by Lee Child

Lee Child, author of 14 Jack Reacher thrillers, has won Anthony, Barry and Nero awards for his series. In the latest book, 61 Hours, Reacher must keep a key witness alive and away from an assassin in the middle of a blizzard in South Dakota.
You can read Chapter 1 here: http://www.leechild.com/61HRS1.php