Synopsis

Crowley offered Bobby the location of Death, the fourth horseman, in exchange for his soul. Knowing that Sam and Dean desperately needed that final ring to halt the coming Apocalypse, Bobby reluctantly agreed. Meanwhile, Sam and Dean found themselves facing Pestilence, who unleashed a virulent virus upon them, forcing Castiel to intervene. Dean then met with Death to discuss Lucifer, and from that encounter, a pact was forged – one demanding a terrible price.