Texas Ranger William Ray Strong teams up with Judge Roy Bean to track down the Old West's first serial killer, who is stitching a trail of death along the railroad lines slicing their way through Texas.

A Mexican girl on the run from human traffickers brings fifth-generation Texas Ranger Caitlin Strong to the sleepy border town where her legendary grandfather once worked, a region that hides a deadly weapon with a potential to give a new enemy the means to terrorize the United States.

"The drug crisis hits home for fifth generation Texas Ranger Caitlin Strong when the son of her outlaw lover Cort Wesley Masters nearly dies from an opioid overdose. On top of that, she's dealing with the inexplicable tragedy of a small Texas town where all the residents died in a single night. When Caitlin realizes that these two pursuits are intrinsically connected, she finds herself following a trail that will take her to the truth behind the...