In the turbulent shadows of West Texas, Cass Callahan uncovers a deadly conspiracy that threatens everything he holds dear. Weighed down by inner turmoil, Cass is urged to take a step back. But when a mysterious Chinese man dies at the border during a campout, his gut tells him something is dangerously wrong. With the arrival of secretive neighbors and a body washing up from the Rio Grande, Cass throws all caution...