While Dean helps Bobby work on the Colt, Sam finds some demonic omens and two unusual deaths in Elizabethville, Ohio. They investigate, posing as insurance agents as they speak to Father Gil who witness one of the deaths - a suicide in his church. They find the town full of people partying and gambling.
As they check into a hotel, they run into Richie, a hunter Dean has worked with before. On a tip from him, they go to check out a bar owned by Trotter, a local businessman. At the bar, they meet
Father Chandler Mulvaney, brother to hunters
Frannie and
Charlie Mulvaney. Chandler, a hunter before he became a priest, has left his church to hunt demons after the opening of the Devil's Gate.
At the bar, one man shoots another, for sleeping with his wife, but he is not possessed. After the kerfuffle dies down, they discover Richie has disappeared. Casey a bartender at Trotter’s, has taken Richie to a basement in a home owned by her parents, where she kills him.
Meanwhile, Bobby is testing the Colt when
Ruby arrives, and offers to help him make it capable of killing demons again. While Dean searches for Richie, Sam and Chandler investigate Trotter. But Trotter appears to be just human, and they leave to find Dean. Dean has gone with Casey to her basement. He discovered that she killed Richie and has hidden a Devil's Trap. Realizing she is trapped, Casey causes a cave-in in the basement, also trapping Dean.
Casey reveals to Dean that she only encouraged Trotter to introduce things like gambling and prostitution - the behavior in Elizabethville is mainly due to humans’ natural instincts. She also tells him that the Yellow-eyed Demon was actually Azazel, and that after his death, the demon hordes that escaped the Devil's Gate in Wyoming are in chaos, since Sam did not take on the role Azazel had planned for him to lead the demon army. She tells Dean that demons believe in a higher power - Lucifer.
Sam finds out where Casey lives, and searches the house, not finding Dean, but finding traces of sulfur, indicating a demonic presence. He calls Bobby to tell him, before returning to Trotter’s bar, where he enlists the help of Father Gil to find Casey and Dean, not realizing that he is also possessed by a demon. Sam calls Chandler and tells them where they are going. When Sam and Father Gil arrive, Dean tries to warn Sam about him. Father Gil attacks Sam, then breaks into the basement to find Chandler exorcising Casey. Enraged, Father Gil is about to kill both Chandler and Dean when Sam arrives and kills him with the Colt. Ruby is behind Sam - she brought him the weapon. Afterwards, the town hasn’t changed much. Dean confesses to Chandler what Azazel told him - that Sam came back ‘not quite right’. Chandler doesn't dismiss Dean's fears, but tells him that a person's actions defines who they are. Back in his motel room, Chandler calls Frannie and tells her that he thinks her suspicions are right.
As Sam prepares to leave, Ruby appears and congratulates him on killing the demons. Sam reminds her that he killed a person in the process, and this upset him. When he threatens her with the Colt, she again reminds him she can help with Dean’s deal.
Quotes
Dean: So, you just decided not to be a priest anymore?
Chandler: I'm still a priest. I just decided there were more pressing matters than the Rosary Circle cake raffle.
Dean: I can't believe we worked a case with a Mulvaney and nothing got set on fire. That's a first.
SuperPretendWiki entry 3x06 Best Friends Forever____