When they can't kill Lucifer with angel-killing bullets, Crowley offers his own life to heal the rip between worlds and dies at his own hands, driving the Angel Blade into his stomach. Supernatural wrapped up its 15th season in 2024, and neither Crowley nor Sheppard ever returned.

Mark Sheppard, who recurred since 2009 before being promoted to series regular in Season 10 on the CW's Supernatural, won't be returning as a regular for Season 13. Sheppard's character Crowley was one of many who died in the finale, sacrificing his own life to seal the rift between worlds.