Crowley turns to Dean for help to locate the First Blade, the only weapon that can kill Abaddon. However, the trail leads them to the biblical Cain. Meanwhile, Sam asks Castiel for help when they need to extract the remaining angel grace from Sam's body to track Gadreel.
Crowley turns to Dean for help to locate the First Blade, the only weapon that can kill Abaddon. However, the trail leads them to the biblical Cain. Meanwhile, Sam asks Castiel for help when they need to extract the remaining angel grace from Sam's body to track Gadreel.
