The Winchesters finally overcome the door, but Crowley has vanished. Only Samandriel and Dr. Lab Coat remain. For some reason, Lab Coat decides to stick around and fight instead of vomiting himself out of his vessel. He and Dean scuffle while another demon shows up to take on Sam. While Castiel carefully removes the various screws and the awl from poor, doomed Samandriel's noggin, he again sees himself at Naomi's mercy. "Hold still," Naomi tells him. She has him restrained in a white leather dentist's chair. She goes into his eye with the drill. In the factory, Castiel removes the last of the screws and the halo. Castiel touches Samandriel's face, which lights up with such relief.
During all that, Sam and Dean have been fighting their demons. A spare bomb would come in handy about now, wouldn't it? They finally off the newcomer demon and turn their attentions to Dr. Lab Coat. "Wait! I know things," he pleads. Dean, without taking his eyes off the demon, waves to Castiel. "Cass, go!" The angels flutter away. Dr. Lab Coat continues to plead for his life. "There's so much you don't know! You need me!" The logical thing to do would be keep the guy around and question him a bit, but then the Winchesters would know about the angel tablet and we can't have that. So Dean guts him with the demon knife, thus ensuring their ignorance for a few more episodes.
Castiel and Samandriel materialize near the Impala. "You're safe," Castiel tells the poor, doomed angel. "I'm taking you home." This fills Samandriel with dread rather than relief. He clutches at Castiel's sleeves and pleads with him not to take him back to Heaven. He confesses that he told Crowley things he shouldn't have. "He got to our coding," he says. "Secrets I didn't even know we had." Samandriel tells him about Naomi, but it's like the first time Castiel has heard the name. "They're controlling us, Castiel," says Samandriel.
Naomi yanks Castiel into her office. "Kill him!" she shouts. Castiel is confused. He wants to know why he saw her face, why he was so afraid. "What did you do to me?" he asks. She grabs him by his lapels and orders him to kill Samandriel. She shoves him away...