Mary is really struggling with her new world.

Supernatural Season 12 Episode 3 certainly made that clear, especially with the final scene.

But while there was the classic ghost hunt with some family drama, the hour also provided fans with a Castiel and Crowley team-up. Hello, Agent Beyonce and Agent Z!

So join TV Fanatic staff writers Sean McKenna and Christine Laskodi and The Winchester Family Business’ Alice and Nightsky as they discuss “The Foundry.”

What was your favorite scene or quote?

Christine: I mean, that last scene was SO good. It might go down as one of my favorite scenes of the series. Mary leaving this time felt like a betrayal, which is worse than death. That look on Dean's face was utterly heartbreaking. But I'll also throw out the scene where Mary uses The Partridge Family agent names. That got a laugh out of me.

Alice: I know I should say the final scene, but it wasn’t. Honestly, it was when Castiel revealed his “rock star” FBI identity as Agent Beyonce. There’s the clueless Castiel we know and love! To make it even better, Crowley shows up and says, “I guess that makes me Jay Z.” Then Castiel later introduces them as Agents Beyonce and Z. I don’t know why I laughed so hard over that, but I did.

Nightsky: The scene where Cas and Crowley exit the sister's house. Cas uses sarcasm and Crowley uses impeccable logic to convince Cas of the necessity of their mission. It was a perfect use of both of their characters.

Sean: Those were some good scenes, but I really liked Mary’s slide across the floor with the gun. It was such a cool action shot, and Mary really is a bad ass hunter, even if she does feel out of her time.

Did you enjoy seeing Crowley and Castiel work together?

Christine: YES! I like their dynamic. When they're not adversaries, they're really entertaining. Cas poking fun at Crowley looking for his mommy... that was like a joke that Sam and Dean would do! But I don't know that I'd want it to be an every week partnership. It could get stale if we see it all the time.

Alice: Very much so. The way it should be. I find they are so much better together than running off in their own separate stories. Think about it, have the scenes with Castiel alone or Crowley alone been remotely interesting? I loved the scene toward the end with Castiel, Crowley, and Rowena, too. They make quite a team. I wouldn’t mind those three handling the B story together for the rest of the season.

Nightsky: At first I was skeptical that they were being reduced to comic relief. Misha's hilarious delivery of ridicule over Crowley's intentions to rescue "mummy" made it all click for me, though, and the duo suddenly worked. I'm looking forward to seeing more of them together.

Sean: I’ll have to agree that Castiel and Crowley alone in separate stories haven’t been as interesting. And it was pretty humorous sticking them together, especially with their agent names. I’m not sure if I’d want their teamup every week, but it worked for me during the hour.

Watch Supernatural Season 12 Episode 3 Online

Were you surprised Rowena was able to trick Lucifer?

Christine: Actually, yes. She's always just a little bumbling, so I tend to forget that she's pretty freaking powerful. I thought surely she was just going to be Lucifer's prisoner-witch, so that reveal was not only a pleasant surprise, but it gave Rowena a purpose. She wants Lucifer gone, and now she's proved it. It was a great moment for her, and it should buy her a lot of good will with the rest of the gang.

Alice: I wouldn’t say surprised. Lucifer has always been guilty of underestimating people. It’s more like disappointed. I really loved Rick Springfield as Lucifer, and I was hoping his story would go longer. Couldn’t she have done that a few more episodes down the road? Ah well, it was fun while it lasted I guess.

Nightsky: I was surprised she had the courage to try. I was totally taken off guard when she banished him to the depths of the ocean.

Sean: I guess I expected Rick Springfield’s Lucifer to stick around a bit longer. Rowena managed to trick him, but would Lucifer hesitate to kill the next time around. I wonder who Lucifer’s next vessel will be…

Do you agree with Mary's decision to leave?

Christine: I understand it, but I don't agree with it. One of Mary's biggest issues is the time she lost with her boys. How does leaving them help her deal? She should be spending more time with them! But on the flip side, when she described how she was living in Heaven — it made me understand it. She's going through a lot, things Sam and Dean can't understand.

Alice: I’m OK with it. Sam could see that she was practically drowning from everything that was happening. Dean was the one in denial. It wasn’t like she was leaving behind a 4-year-old and an infant. She was leaving behind two grown men that have gone on this long without her. What bothers me is this is happening in episode three.

I love how well Samantha Smith has blended in and where she has taken Mary’s story. I didn’t expect her to stick around permanently, and I was certain she’d eventually go off on her own, but so soon? That’s what feels cheap to me, and that’s probably why I didn’t enjoy that final scene as much as others.

Nightsky: How could anyone agree with that decision?? She may not yet feel close to either of the men her sons have become, but they each made it clear how utterly thrilled they were to have her back in their lives. Even if she's struggling and needs time to herself, she could have been much more sensitive to their feelings.

How about asking to move into a motel nearby? Something less dramatic than walking out with no warning, discussion, clothes, money, phone... I read a theory about her taking John's journal that was actually the first thing I've seen that made sense out of her radical departure.

Sean: She should have stayed, but I understand her reasons to leave. I do wonder about her story though and where that will go when she does return. Samantha Smith has done such a fantastic job that it’s disappointing she won’t be around for a while.

Supernatural Photos from "The Foundry"

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How will Sam and Dean be in moving forward without Mary?

Christine: I think Sam will be more understanding than Dean, but still just as hurt. That look on Dean's face seemed to show that he feels betrayed (did anyone else read it that way?). Dean and Sam both live by the “family sticks together” code, so for Mary to just leaves goes against everything they believe. I hope that the British Men of Letters story distracts them enough that angst doesn't become prominent.

Alice: How much do you want to bet next episode they have one quick conversation about Mary in the car and then go off on their monster hunt? Sorry, that’s a commonly used writing tactic on this show that I’ve always hated.

Anyway, part of me is crushed that this image they have clung onto of their mother their whole lives has been obliterated with her return and that feeling of abandonment really must sting. But Sam and Dean have lived their whole lives without Mary, so they’ll do what happens every time they’re delivered a blow, they’ll brush it off and move on with their work. They’re warriors.

Nightsky: Dean will withdraw and throw himself into his work. Sam will bug Dean until they both admit how much it hurt them. This one is crushing because they allowed themselves to be vulnerable. They inherently trusted their mother and she betrayed that trust. They'll carry on, though, like they always do. The only thing they have is each other and Baby.

Sean: I’m sure it will hurt, but they will move forward and on to the next hunt. I think Dean did feel perhaps a bit betrayed, but Mary’s situation is far more than just leaving two little kids behind. She’s dealing with so much in being back that her boys should cut her a little slack. I get that her leaving will affect them going forward, but I hope that they come around. Mary will return. Again.