Changes

The angels falling to Earth is believed by many humans just to be a "global meteor shower." Most angels blamed Castiel for what happened and want revenge. When Dean gets desperate for a way to save Sam, he sends out a prayer to all angels, pleading for one to save Sam, but while it draws in [[Gadreel]], pretending to be Ezekiel, who is willing to help, it also draws three angels who want to know where Castiel is. Dean kills one and banishes the other two, but is forced to let "Ezekiel" possess Sam in order for him to heal both Sam and himself as "Ezekiel" was injured falling to Earth. At the same time, an angel named [[Hael]] enlists Castiel's help in guiding her on Earth, but after he decides to help Dean instead, she kidnaps him and reveals her true plan to be to possess Castiel to become stronger. Castiel incapacitates Hael by crashing her car and kills her when she threatens to reveal where to find him to all the angels searching for him. <refname="nine01">[[9.01 I Think I'm Gonna Like It Here]]</ref> While Gadreel allows Sam to remain in control for the majority of the time, he emerges without Sam's knowledge when his presence is needed to protect Sam or aid the Winchesters in some way.<refname="nine02">[[9.02 Devil May Care]]</ref><refname="nine03">[[9.03 I'm No Angel]]</ref><refname="nine04">[[9.04 Slumber Party]]</ref><refname="nine05">[[9.05 Dog Dean Afternoon]]</ref> A faction of angels quickly emerges led by [[Bartholomew]], a follower of Naomi, that uses [[Reverend Buddy Boyle]] to gain vessels and hunt for Castiel. After killing an angel that locates him, Castiel wards himself against detection with an Enochian [[Tattoos|tattoo]] so Bartholomew sends rogue [[Reapers]] after him. One succeeds in killing Castiel, but Ezekiel resurrects him.<ref>[[9.03 I'm No Angel]]<name="nine03" /ref> While Dean and Castiel deal with rogue Rit Zien angel [[Ephraim]], ultimately killing him when he tries to kill Castiel, Sam and Kevin learn from Crowley's translation of the angel tablet that Metatron's spell to expel all angels from Heaven is irreversible.<refname="nine06">[[9.06 Heaven Can't Wait]]</ref> It was also revealed by [[Malachi]], who is now at war with Bartholomew, that a whole host of angels died during the fall, among the dead he names Azrael, Sophia, and Ezekiel. After stealing [[Theo]]'s Grace, Castiel becomes an angel once more. After Dean learns the truth and meeting with Metatron, Gadreel takes full possession of Sam to become his lieutenant in restoring Heaven, murdering Kevin Tran along the way.<refname="nine09">[[9.09 Holy Terror]]</ref> Eventually, with the help of Crowley, Sam expels Gadreel who merely returns to his original vessel to continue his work.<refname="nine10">[[9.10 Road Trip]]</ref> After being captured by Bartholomew's followers, Castiel discovers that Bartholomew is using Boyle's resources to track Metatron whenever he appears on Earth, but is also eliminating all other factions, even peaceful ones such as the Penitents who coexist with humanity. When Castiel refuses to kill [[Eliah]] due to wanting no more angel on angel bloodshed, Bartholomew attacks him and Castiel is forced to kill Bartholomew in self-defense. However, Castiel's beliefs sway some of Bartholomew's followers who decide to follow Castiel in his way of thinking.<refname="nine14">[[9.14 Captives]]</ref>