When finally confronting Metatron, Dean is fatally stabbed and once again dies. His body brought back to the bunker, Dean's reawakens a demon and leaves with Crowley.
Growing desperate to defeat Abaddon, Crowley manipulates Dean into accepting the Mark of Cain, from Dean's ancestor Cain, and aids him in locating the First Blade. Mending his bond with Sam, Dean kills Abaddon and nearly slaughters Gadreel.