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Season 7, Episode 22
There Will Be BloodWritten by Andrew Dabb and Daniel Loflin.Directed by Guy Norman Bee.Air Date: May 11, 2012.Sam and Dean start collecting the ingredients needed to take down Dick Roman, starting with the blood of the Fallen. With Castiel's blood already acquired, they turn to Crowley, who agrees to part with his only if they get the blood of an Alpha first. He directs them to Hoople, North Dakota, where they might find a lead to the Alpha Vampire. While searching, the brothers discover that the Leviathans are poisoning food products containing corn syrup with the formula they created and tested with the Turducken sandwich.