Changes

[[Castiel]] returned to the Bunker to talk to Sam and Dean about his temporary partnership with the angels, but it turns out to be a ruse to steal the Colt which was under Dean's pillow rather than in their safe for safe-keeping. After [[Joshua]] had tracked down Dagon through a celestial pulse caused by the [[Nephilim]], Castiel and [[Kelvin]] went to her safe house along with Hozai and the Colt to kill both her and [[Kelly Kline]] with the remaining two bullets. He used one of the bullets to attempt to kill Dagon, but she teleported out of the way. Castiel went downstairs with every intent to kill Kelly, but he couldn't do it. After Sam and Dean had caught up with them, they explained their plan to make the Nephilim into a human by extracting its grace so both the baby and Kelly can live, but Kelly refused to let them do it because she wants her child to be born with its powers. After waiting in the Impala, Kelly had taken the keys and drove away with Castiel intending to go to [[Metatron's Cube|Heaven's Gate]], leaving the Colt with Sam and Dean. When they arrived, they discovered that Dagon had caught up with them after killing Hozai, Kelvin, and Joshua when he appeared. When Sam and Dean arrived and tried to stop Dagon from taking Kelly again, she attacked Dean and took the Colt from him. Dagon used her power to heat up and melt the barrel of the Colt, causing the barrel muzzle to fall off and severely damaging the gun. Castiel is later able to kill Dagon without the Colt using the powers of the Nephilim; [[Jack Kline]].

Sam retrieves the pieces of the damaged Colt and takes them back to the Bunker where it's shown that the heat has deformed parts of the gun's mechanisms. Sam promises to attempt to repair the legendary gun, but he is unsure if he can.<ref>[[12.20 Twigs & Twine & Tasha Banes]]</ref>