In "Lily Sunder Has Some Regrets," fans saw Castiel (Misha Collins) face the consequences of his rebellious past on Earth. Now that the angel, along with Sam (Jared Padalecki) and Dean (Jensen Ackles), has come to terms with the aftermath of the death of Billie the Reaper, a new tragedy awaits the trio in "Supernatural" season 12 episode 11.

The trailer for "Supernatural" season 12 episode 11, titled "Regarding Dean," embeds some spoilers. In a very Dean-like kind of way, the older Winchester disappears for another glorious night out in town, but things go haywire upon his return. He's completely blacked out, and no -- it's not the whiskey. Could there be another witch after the boys?

Yet, as unfortunate as the boys could ever be, another fan favorite, Rowena (Ruth Connell), makes an appearance. She may be able to help the Winchester boys in "Supernatural" season 12 episode 11,; but at what cost?

According to FanSided, this is a turnaround from the Lily Sunder drama fans saw last week, which might tie into the overall plot. This is especially because it's been a while since Kelly, the mother of Lucifer's child, made an appearance. Either Kelly, a rogue British hunter, or someone on Lucifer's team is hexing Sam and Dean in "Regarding Dean."

From the promotional photos of "Supernatural" season 12 episode 11, it looks like Ackles had a great time filming the episode. There will be voodoo involved, a party and some mechanical bull-riding. Meredith Glynn is in charge of the writing on this episode, so expect to see the best from Dean's character. Glynn also penned the fan favorite, "The One You've Been Waiting For," where Dean killed Hitler.

"Supernatural" season 12 episode 11 airs Thursday at 8 p.m. on The CW in the US, a time change from previous episodes this season. What are you looking forward to for the next episode? Let us know in the comments!