From Dusk Till Dawn Episode 3.01 Head Games

Season three of "From Dusk Till Dawn: The Series" continues the Gecko brothers' saga as they fight their way through the chilling world of culebras, the vampire-snake hybrids that control hidden empires in Texas and Mexico. Once the baddest outlaws in the land, Seth and Richie made a run for the Border two years ago to save their lives - and their fortune. After stumbling into a bar full of bloodsuckers and bandits, the Geckos encountered the vampire goddess Santanico, joining her cause to settle an old score. It won them a place in the culebra world.

Now that world is on the verge of violent and destructive explosion as new enemies hell-bent on domination gather to take them down. In typical Gecko fashion, Seth and Richie assemble an unlikely crew (some new, some old) to take on the forces of hell.

In this season premiere, After the Lords demote Seth and Richie to collector, their organization is infiltrated by a mysterious new enemy bent on destroying the Geckos, the Lords and all culebras.