Lights" creator Peter Berg makes the wild west look like hell on Earth in "American Primeval." There's some good between all the blood.

In the first episode of American Primeval, Sara (Betty Gilpin) journeys West to find her husband, but things do not go according to the plan.

This episode fleshes out the world these characters inhabit, as well as the lives some of them have led. The key figure here is Isaac, the tracker who rescued Sara Holloway and her son Devin from certain death at the hands of the Mormon militia the Nauvoo Legion and their indigenous allies.