Bryan Cranston, Breaking Bad

The consequences of Walt's actions are really about to pile up on Breaking Bad.

In the season opener (warning: minor spoilers follow) Skyler (Anna Gunn) filed for divorce after learning that Walt (Bryan Cranston) has become a crystal meth manufacturer. On Sunday's episode (10/9c, AMC), Walt gets his first taste of how serious Skyler really is.

Breaking Bad: Is Walter White TV's biggest liar?

"She's trying to maintain distance and Walt's agenda is to bring them back [together]," Cranston tells TVGuide.com. "They're working at counter-purposes here, and all in the interest of what they think is best for the family. It gets very contentious throughout the season."

Walt will get some support from his son (RJ Mitte), who shows up at Walt's apartment complex no longer wanting to live at home with Skyler. Walt seizes the opportunity to attempt reconciliation with Skyler, but she's having none of it, changing the locks on the house and threatening with a restraining order.

The response — breaking into his own house — is classic Walt. "One of the things viewers respond to favorably about Walt is that he's tenacious," creator and executive producer Vince Gilligan says. "Whether he's working toward a good goal or a bad one, he does not give up easily. He's all about keeping his family together and he doesn't forget that easily."

Ratings: Breaking Bad hits series high

But Cranston says Skyler continues to have the definite advantage. "When you are the one with the secret, you do sort of have the upper hand because you have information that others don't," Cranston says. "Now, that's out. She's taking over and positioning herself, and Walt finds himself behind the eight ball. That's not a place anybody wants to be, especially when the game is so dangerous."

Speaking of danger, the two mysterious men (Luis and Daniel Moncada) who blazed a path across the border in Episode 1 are hot on Walt's trail this week. Along the way, "the cousins" will cross paths with a familiar face, which will offer more answers as to exactly which people Walt has rubbed the wrong way.

"This third season expands horizontally so that we realize that Walter is not living in a cocoon," Cranston says. "He's not completely encapsulated by his actions. We see how it spreads. Manufacturing this quality of crystal meth is stepping on toes that Walt is not even aware of. ... These two guys have some other connection to the story line that we've seen the past two years.

Check out photos of the Breaking Bad cast

While Walt should be running from danger, his lawyer, Saul Goodman (Bob Odenkirk), is pushing him to get back to cooking. Gilligan promises viewers will see much more of Saul this season.

"There's more to Saul than just comic relief," Gilligan says. "He's actually one of the sunniest and most positive people on our show. He's a guy who's relaxed and comfortable in his own skin. Whereas Walt is a guy who refuses to define himself ever as a criminal, Saul is quite relaxed with the fact that he is a wrongdoer. I think that makes him refreshing."

He's also a hell of a lawyer, as he proves when he helps Jesse (Aaron Paul) with an investment opportunity. "Billboards and bad TV commercials aside, he's also a very good attorney," Gilligan says. "He's not good in the sense that he upholds the standards and ethics of the New Mexico bar, but he knows the law inside and out. He's got loopholes and shortcuts and scheming ways. He's an astute attorney and he hides that with this clownish exterior, but he's not a man to be underestimated."

Walt also shouldn't underestimate Gus (Giancarlo Esposito), the fast-food franchise owner who buys his meth in bulk. "He's polite and soft-spoken and very businesslike," Gilligan says. "But as much as Walt thinks that Gus is a genteel businessman that he can talk and reason with, he will learn as the season progresses that he's made a deal with the devil."