Darker than black

Before the sun has a chance to rise on the majesty of Big Bend country, sheriff's deputies Ricos and George are called to the Rio Grande near the Texas resort town of Lajitas, where there is an informal crossing point. A dead body has been found at the edge of the river on the U.S. side. Later that day, a severed foot is reported by fishermen farther upstream. Then there's a burning wreck, a series of break-ins, and a new truck is stolen. A large stash of cocaine is discovered. Then another. "Stereotypical Mexican drug dealers" are seen hanging out in the Ghost Town. A handsome special agent from the D.E.A. comes to town. The deputies are soon overwhelmed with the amount of crime taking place in their normally serene community. As Deputy Barney says to Deputy Margarita, "What in Lawman Hell?" Can these crimes possibly be related?