About Episode

Castiel finds Crowley, and with Jo's help the brothers enter his house. To their surprise Crowley shoots his henchmen and gives them the Colt, stating that he wants Lucifer dead because he believes that eventually Lucifer will kill all demons after he destroys humanity. Back at Bobby's place, Bobby photographs himself, Sam, Dean, Ellen, Jo and Castiel, as he believes that this might be their last night on Earth. When the team arrives in Missouri, Castiel sees Reapers everywhere. He tries to find out why they are there and is subsequently captured by Lucifer, who tries to convince Castiel to join him, while showing that his own temporary vessel Nick, overpowered by Lucifer's presence inside him, is dying. Meg arrives and sends hellhounds after the brothers and the Harvelles, and while trying to help Dean, Jo is fatally wounded. While taking shelter in a hardware store, Dean calls Bobby, who tells him the Reapers are in town because they are waiting for their boss to show: Death, one of the Four Horsemen. Realizing she won't recover from her wound, Jo suggests they build a bomb to blow up the hellhounds, using her as bait to lure the hellhounds inside. Ellen volunteers to stay behind, too, so she can let the hellhounds in and set off the bomb while Dean and Sam escape. After a tearful goodbye with Dean, Jo dies in Ellen's arms, who then blows up the building, killing herself and the hellhounds. The brothers find Lucifer in the middle of summoning Death. Dean shoots Lucifer point blank with the Colt. However, he heals instantly and reveals that there are only five beings the Colt can't kill — and he happens to be one of them. Lucifer sacrifices a dozen demons to summon Death, stating that "they're just demons". Meanwhile, Castiel manages to free himself from his trap and takes the brothers to Bobby's. There, Bobby throws the picture showing them all into the fire, and, together with the brothers, grieves silently over the deaths of Jo and Ellen.