In 'Good God Y'All', Sam and Dean discover that blood has been shed when Lucifer tries to control people's mind.
"The last war comes home," Lucifer begins taking lives on the next episode of "Supernatural". All the while the angels are uniting with mortals to fight the end of the world. Castiel tells Sam and Dean that he is going to search for God, who will be able to defeat Lucifer.
Bobby's old hunter friend, Rufus (guest star Steven Williams), is panicked about demons attacking his town, and begs Bobby for help. Sam and Dean arrive at the town and realize there is a spell over the townspeople, making them hallucinate that they are demons and causing them to kill one another. Meanwhile, trust is tested when Sam again finds demon's blood on the tip of his finger.
Titled "Good God, Y'All", the episode airs September 17 on The CW. Misha Collins who plays Castiel said that he was blown away by the second episode of the fifth season. "When I read the script for the second episode, I was stunned by the mission that Cas is going on," Misha talked to Zap2It. "It is epic beyond belief. It's the most ambitious conceivable mission and that is not hyperbole. Even by 'Supernatural' standards, I was like, whoa, this is big."