In Treatment premieres its second season this Sunday.

Instead of airing on five consecutive nights, the critically-beloved drama will air two episodes on Sunday evening, following by three Monday evening.

This isn't the only change fans will see. As star Gabriel Byrne talks about in an interview with The Chicago Tribune, season two depicts Dr. Paul Weston in a new office, in a new city, surrounded by new patients...

Can you characterize the storyline, or journey, for Paul this season?
He's dealing with the after-effects of separation, both from his wife and his children, and from the city where he lived and worked. He's definitely confronting himself.

And I was kind of interested in that notion of how men are presented in terms of character -- what the definition of masculinity and what a man is. I was interested in exploring it, because I don't believe that men are meant to be strong, silent types who know exactly what to do in every situation. The role of men has changed hugely in the last 10 years. It's changing by the week.

You ask a man who was employed four months ago, who thought the world was a predictable place, how he feels now about himself. Because we all to a greater or lesser extent, find ourselves defined by the work that we do and the relationships that we're in. Take away the work and the relationships and who is actually there?

So he has to begin again in another city, with a completely new list of clients and he also has to redefine himself as a man, outside his marriage.

That episode with you and [guest star] Glynn Turman was so intense last season. And now that they've brought back that character [of Alex's father] -- is that going to be resolved at the end of the season, or well before that?
It doesn't resolve itself until the end. There's unfinished business. I like that idea. There are things he still has to deal with that cause him real pain. One of them is, he sent a guy [a patient named Alex] to die. He feels morally responsible for his death and the father blames him for that. The father cannot believe the son killed himself.

The father is saying, "You are the one who gave him permission to go back -- if it wasn't for you, he wouldn't be dead." And the father has recourse to law. Now he has to go to court to defend an ethical and moral situation.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.