[s7e22] There Will Be Blood -

The episode ends on a grim cliffhanger that leaves the Winchesters nearly alone:

With Castiel’s blood already secured, the brothers turn to Crowley. He agrees to help but demands they find the first, as his own blood is a "last resort" that could be used against him. [S7E22] There Will Be Blood

The boys track the Alpha Vampire to a hidden monastery. They attempt to negotiate, warning him that the Leviathans—his supposed allies—are actually planning to exterminate his kind by poisoning their food source. The episode ends on a grim cliffhanger that

Watch the brothers face off against the Alpha Vampire and prepare for the final battle with the Leviathans in these highlights: Supernatural "THERE WILL BE BLOOD" (S7E22 REACTION!!) JerBear Reacts YouTube• Sep 5, 2023 [S7E22] There Will Be Blood