How Cassidy's "Self-Destructive" Behavior Is Coming Back to Bite Him

Cassidy's desperate. His son, Denis, is dying and he's helpless. Although Denis repeatedly asks Cassidy to turn him into a vampire, Cassidy knows it's the wrong thing to do. So, he turns to his friend Jesse with the super powers.

Unfortunately, Jesse says no.  "He can't believe he's prepared to use it the way he's seen him use it, but not to save the one thing he cares about -- his son," Dominic Cooper explains in a new behind-the-scenes video.

Go Inside Episode 8 With the Cast and Creators.

Cassidy isn't the only one that Jesse is disappointing. Eugene is still in Hell, and Jesse hasn't done a thing to correct that mistake. "Jesse should be a little more concerned than he is, and I'd think at some point I'd imagine that lack of concern and Eugene will come to a head," Ian Colletti speculates.

Hear the cast and creators break down Cassidy's tragic decision, and Eugene's helpless predicament.

Watch the latest episode of Preacher available now on and AMC apps for mobile, Fire TV, Xbox One, Apple TV, Roku and Chromecast.

Preacher airs Mondays at 9/8c. To stay up-to-date on all the latest news, sign up for the Preacher Insiders Club.