The CW has released the synopsis as well as a promo for the seventeenth episode of Supernatural‘s eighth season, titled “Goodbye Stranger.”

The official press release has the following information about the episode:

SAM, DEAN, CASTIEL AND MEG TEAM UP AGAINST CROWLEY AND HIS DEMONS — Castiel (Misha Collins) reappears in Sam (Jared Padalecki) and Dean’s (Jensen Ackles) life and tells them Crowley (guest star Mark Sheppard) has unleashed several demons into a small town. The demons are looking for Lucifer’s Crypt, which holds a valuable asset, but Castiel lies to Sam and Dean about what it is. While interrogating a demon, the three discover Crowley has been torturing Meg (guest star Rachel Miner), who knows the exact location of the crypt. Sam and Meg fight to hold Crowley off while Dean and Castiel go in search of the crypt. Thomas J. Wright directed the episode written by Robbie Thompson (#817).

Meg has been MIA since Crowley captured her in the season 7 finale. Along with her return, we’ll be curious to see how Naomi and the other angels that rescued Castiel from Purgatory will feature into what looks like a mytharc-heavy episode.

We also have a short promo for the episode:

“Goodbye Stranger” airs Wednesday, March 20 at 9 p.m. ET.

Looking for more ‘Supernatural’?

It was announced earlier this week that Misha Collins will be returning to Supernatural as a series regular in season 9. He is also slated to direct an episode.

In terms of season 8, Jared Padalecki and Jensen Ackles recently discussed the heavenly trials required to shut the gates of Hell permanently and how they will impact the Winchesters’ bond.

And finally, the season 8 finale air date has been set: Wednesday, May 15 at 9 p.m. ET.