|Episode #||Season 4, Episode 20|
|First aired||April 30, 2009|
|Directed by||Charles Beeson|
|Written by||Jeremy Carver|
|On IMDB||The Rapture|
|Outline||Castiel is ordered back to Heaven, leaving his vessel to rediscover his life.|
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Dean is sitting on a jetty, fishing, in a very peaceful scene. Castiel appears next to him and says he has something important to tell Dean. Dean realizes he is dreaming, but Castiel warns him that even in his mind someone may be listening, and gives Dean an address at which to meet him.
When Dean and Sam arrive at an old factory site, it is obvious a violent fight has occurred, and when they see symbols similar to the ones Anna used in 4.10 Heaven and Hell to banish Castiel and Uriel, they understand that the battle was between angels. They find Jimmy Novak there — the man who has been Castiel's vessel.
While eating his first meal in "months," Jimmy tells Sam and Dean he knows nothing of what Castiel wanted to tell Dean and has very few memories about being possessed. His only desire is to return to his wife and daughter.
In flashback, we see how Jimmy, an observant Christian, was contacted by Castiel. He demonstrated his existence by performing miracles, such as protecting Jimmy while he plunged his hand into boiling water. Jimmy's wife Amelia Novak fears he is mentally unbalanced and pleads with him to seek treatment. He refuses and, standing outside his front door, offers himself to Castiel's service, at which point Castiel possesses him. When his daughter comes out on the porch a moment later and asks "Daddy," he replies "I am not your father," and walks away, not to return for over a year.
Back in the present, Sam lays out the facts of why Jimmy needs to stay with them — regardless of his lack of knowledge as a vessel for Castiel, demons will be after him and he will only draw them to his family. Despondent, Jimmy sneaks out that night when Sam leaves the motel room to consume the last of the demon blood he is carrying in a flask. When Sam called Ruby earlier, desperate for more blood, she didn't answer.
Sam and Dean take off to find Jimmy, and Anna visits them and tells them Castiel was pulled out of Jimmy and taken back to Heaven. She says she does not know the reason, but it is not a good situation for Castiel. Anna warns that demons will indeed be pursuing Jimmy, as he may know the important information Castiel was going to tell Dean. Anna also observes that Sam seems different.
Jimmy arrives home to a cautious and cool welcome from his wife, who hasn't seen or heard from him for a year. After talking with him though, she lets him stay for a meal with her and their daughter Claire. During the meal, their neighbor Roger stops by and reveals himself as a demon. Dean and Sam turn up in time to rescue the family, although Sam is unable to use his weakened powers to exorcise any of the demons.
Jimmy accepts that he must separate from his family, and Dean and Sam steal a car for Amelia and Claire to leave in. Shortly after, Jimmy gets a call that his family has been captured by demons.
Jimmy and the Winchesters travel to where the demons are holding the Novaks. Jimmy pleads to the heavens for Castiel not to abandon him, but he and the boys are captured by the demons, one of whom is possessing Amelia.
The demon that possessed Amelia shoots Jimmy in the gut and orders the other demons to kill Claire. At that moment, Castiel possesses Claire, who quickly attacks the demons, destroying them. Sam and Dean join in the fight, and Sam takes the opportunity to bite one of the demons and drink her blood, which is seen by Dean and Castiel, to their horror. He uses his recharged powers to exorcise the demon possessing Amelia.
As Jimmy lies dying, Castiel, still possessing Claire, comforts him. Castiel tells Jimmy that Claire is like her father — something in her blood makes her special, and he will use her as his vessel. Jimmy pleads with Castiel to leave Claire and possess him instead, despite Castiel's warnings that it will be painful and that he will never die or age. Jimmy agrees and Castiel accedes to his wishes.
As Castiel leaves, Dean asks him what it was he wanted to tell him, but Castiel rebuffs him, saying he doesn't serve man... or Dean; only Heaven.
Back on the road, Sam waits for a response from Dean about the revelation of his blood drinking. Dean seems weary and won't talk about it. Sam gets a call from Bobby, saying he needs to see them — unbeknownst to him arranged by Dean. They get to Bobby's place, and he pretends to show them something in his panic room, but it is a ruse to trap Sam in there.