Freddie Highmore, Vera Farmiga

Now that Norman Bates knows the truth about his murderous ways, how much longer can it be kept a secret?

On the penultimate episode of Bates Motel's second season, Norman (Freddie Highmore) was kidnapped and stuffed in a box for hours. The traumatizing time alone allowed Norman's repressed memories of murdering Miss Watson to come to the surface. "This was a huge chunk of reality for Norman Bates, who just doesn't have an awareness of this part of himself," executive producer Kerry Ehrin says. "How does he handle that?" 

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On Monday's finale (10/9c, A&E), Norman will face that very question when he is rescued by Sheriff Romero (Nestor Carbonell) and his half-brother Dylan (Max Thieriot). But while Norman wants to confront his dark secrets, his mother Norma (Vera Farmiga) does everything she can to prevent the truth from coming out.

"All of Norma's energy goes into stuffing away things she doesn't want to look at," Ehrin says. And Norman's history of behavior — his unusual tendencies, all the things that are sort of spelling out that he is a certain person — she has been stuffing down. He now knows. How is that going to play out for someone like Norma who has put all of her energy into hiding this from herself and from him? It's her worst nightmare."

Despite Norma's focus on Norman's issues, the finale also deals with the relationship between Norma and Dylan, who learned this season that he was the product of incest after Norma's brother Caleb (guest star Kenny Johnson) raped her.  "Given his history with his family, [Dylan] has every right to be done with them," Ehrin says. "But there's something in him that can't quite walk away. He and Norma keep circling back around each other but they can't connect. It's going to come to a head in the finale." 

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And even though Norma wants to hide the truth about Norman, she may not have a choice when Romero insists that Norman take a polygraph test about the night Miss Watson was killed. However, Norma may not have as much reason to fret as she thinks.

"Romero can't deal with Norma in a way that is completely unemotional because he has grown fond of her," Ehrin teases. "Romero is still trying to do the right thing, trying to figure out the truth. But there's this little bit of a roadblock that gets tossed into it."

Bates Motel's Season 2 finale airs Monday at 10/9c on A&E.