In advance of tonights finale, we talked toBig Little Liesstars Nicole Kidman and Alexander Skarsgard.

Kidman admits that filming the violence affected her in ways she wasnt prepared for.

There were days and days of doing a lot of aggressive, really violent scenes.

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Credit: Hilary Bronwyn Gayle/HBO

And then one day, I just got a rock and I threw it through a glass door!

I thought,Oh my gosh, what is happening to me?

I must had a lot of pent-up [stress] because I was trying to hold it all in.

Skarsgard adds that the violent scenes were really tough to shoot.

Per director Jean-Marc Vallees style, the scenes were shot from beginning to end with no break.

Those days were horrible, says Skarsgard.

But having a partner like Nicole was extraordinary.

We had an opportunity to get to know each other and build trust.

And wed check in with each other and verify everything was okay.

But the two are also very proud of the work and the light it shined on domestic abuse.

They are also thrilled the show has generated so much attention.

She howled with laughter at the news.

Well, it was a strange scene, she admitted.

My aim had to be so accurate.

She went on to break down how that scene actually worked.

I would say, Yeah, yeah, dont worry.

But I was thinking,oops.

I do play tennis so I knew that Id be okay.

Plus, I had a big target, she says, laughing.

TheBig Little Liesfinale airs Sunday at 9 p.m.