→15.07 Last Call
With [[Sam]] in bad shape, [[Castiel]] places a call to Sergei, claiming that due to what happened with [[Jack]], Sergei owes him. Sergei tells Castiel he is busy taking his niece shopping, but Castiel does not take his no for an answer, and threatens to find Sergei and burn him alive if he doesn't help.
Sergei arrives at [[the Bunker]], in awe of being in the fabled home of the [[Men of Letters]]. Castiel leads Sergei to the infirmary, where [[Eileen]] is tending to a still-unconscious Sam, and pleads for him to help Sam. Sergei obliges, producing a crystal from his satchel and waving it over Sam's body until it begins to light up when it reaches Sam's bullet wound. He instantly realizes what
it wrong -- Sam is dying.
In the Bunker's library, Sergei explains that Sam's wound is connected to his [[soul]] and also tethered to someone or something in the outside world. After treating Sam's wound, Sam's condition becomes worse. In the hallway, Sergei tells Castiel and Eileen that in exchange for receiving the [[Key to Death]] in the Bunker, he will reverse what he has done to Sam. Eileen and Castiel refuse, and Castiel shows Sergei a photo of his niece, Anna, whom he has [[Bobby Singer (Apocalypse World)|Bobby Singer]] keeping an eye on, and threatens to have her harmed if Sergei doesn't fix Sam. Sergei agrees and performs a ritual that wakes Sam up. Upon leaving, Sergei remarks that he likes the new Castiel, telling him he is very... Russian.