|Sammy's Lucifer-related insomnia has worsened considerably since last we saw him, and it lands him in an insane asylum after the doctors determine the he is suffered a psychotic break. Of course, Sam's Lucifer hallucination comes along for the ride, and the foul fiend quickly devises a series of nuthouse-related torments designed to run poor Sammy into an early grave. Sammy does his valiant best to ignore the torture, however, and he helps a fellow inmate rid herself of the pesky ghost that had been plaguing her for the better part of the last year.
Meanwhile, Dean is dialing his way through Bobby's lengthy list of contacts. Not getting anywhere he places Bobby's address book securely on the table, which while Dean has his back turned, falls off the table revealing a business card. (If you would ask my opinion, I would tell you that this is the third in Ghost Bobby related incidence). When calling the business card contact, Dean is being told about a faith healer named Emanuel, who just might be able to cure Sam. Dean tracks Emanuel down, and is shocked to discover that Emanuel is actually an amnesia-afflicted Castiel, living with his new wife, and he's been spending his time curing his various friends and neighbors of their various ills and ailments. Luckily enough, Emanuel is more than amenable to the idea of a road trip to go restore Sammy to the latter's typical levels of mental health, but there's a problem: Crowley's cancelled the moratorium he placed on all Winchester-related demonic activity, and so on top of everything else, Dean finds himself under repeated attack by Hell's many minions.
Fortunately, Meg shows up just in time to offer crucial assist, and she promptly invites herself along on the rest of the journey to the asylum. Eventually, everyone ends up in the same place and, after Castiel's memories come rushing back in the middle of an run-in with a quartet of Crowley's goons outside Sam's hospital, Castiel decides to sacrifice himself so Sammy might live, because the only way he can cure Sam is by trading places with him, while Meg gets herself hired as one of Castiel's nurses.
On a personal note, I enjoyed this episode so much. It had the feel of older episodes that made me a fan. It appears that all the old players are coming back (which the show really needed). All we need now is for Castiel to beat Lucifer, bring Bobby back, dust off the Impala, and all is right with the world 🙂