The episode ends on a grim cliffhanger that leaves the Winchesters nearly alone:
Dick Roman summons Crowley into a devil’s trap to prevent him from helping the Winchesters. [S7E22] There Will Be Blood
In the penultimate episode of Season 7, Sam and Dean Winchester race to assemble a powerful weapon to take down Dick Roman and the Leviathans. Following instructions from the Word of God tablet, they must combine the bone of a righteous human with the blood of three "fallen" beings: a fallen angel, the King of Hell, and an Alpha monster. The Quest for the Alpha's Blood The episode ends on a grim cliffhanger that