Boyd stops by the Tent Church to talk to Jurassic Park Preacher's sister and offer her money to get her brother out of Harlan. She says it'll cost a lot more, like a new church built somewhere. So he sends his old war buddy after them along with another guy, who is attacked by the snakes. He brings the guy - with the head (and only the head) of the snake still attached to his face - to Boyd's bar. Jesus Christ. Gross.
Raylan's GF used to be a thief/con-artist with her (ex-)husband. Because all of his romantic entanglements must be hella complicated and laden with criminality. He also gives the ex the "get out of town by 6PM" bit.
Johnny's going behind Boyd's back to meet with Wynn Duffy. Says he'll help Wynn kill Boyd. Oh hell no. Ass.
Raylan and Tim go to visit the ex-wife of the guy-who-didn't-fall-from-the-sky, who happens to be a (real) psychic. The guy was a witness in some sealed case. An FBI dude shows up and distracts our guys, and while she tries to sneak away she's actually kidnapped by someone. A someone who is blackmailing the FBI guy somehow. But who knows how, because the FBI dude kills himself in front of Raylan after telling him where they can find the woman. She tells them that the not-dead-guy saw Theo Tonin, the big time Dee-troit gangster, murder a government informant.
Over at Boyd's, the doctor comes and removes the snake from the guy's face. They figure out that there's no venom there. So Boyd comes to the Tent Church bearing the gift of a rattlesnake. The preacher's sister confesses that she's been milking the snakes of venom, unbeknownst to Jurassic Park Preacher. JPP doesn't care and handles the snake anyway, and is bitten.
Raylan comes back home to the bar to find his GF missing and his place ransacked, stashed money and all. Oh lordy, here with go with Raylan chasing some crazy GF. Also, this 30-year-old mystery thing better get somewhere quick because I don't see the point. I'm enjoying all the random character bits, but I don't know what the plot's getting at.