Trouble rides through Texas.

Detective Al Quinn had hoped to spend his retirement fishing at his lakeside home and taking care of the local deer. That bubble pops when Gladys Sanders, the sixty-year-old co-owner of an organic farm, is found dead by her two sisters, her body displayed like a scarecrow. On the same day, her son is run over in his kayak.

Evidence slips away from the scene right under the noses of two deputies, so Sheriff Clayton asks Al to mentor a younger detective. That simple task explodes into raw danger when three rival biker gangs with ties to Mexican cartels start mixing it up in earnest.

ICE Agent Jaime Avila tells Al that old turtles ought to leave the fighting to the young. But when the danger involves Al's brother, Al dives into the heart of the ruckus. Before the war is over, the gangs just might get to hear the turtle roar.