'Big Little Lies' episode 7 spoilers, news: Ziggy did not bully Amabella; Nicole Kidman reveals how invested she was in playing her character

The finale episode will reveal that someone else is actually hurting Amabella (Ivy George) in school. Meanwhile, Nicole Kidman reveals how affected she was in taking on the role of Celeste.

"Big Little Lies" will be ending on its seventh episode, titled "You Get What You Need," where Jane (Shailene Woodley) discovers that Ziggy (Iain Armitage) has nothing to do with the beatings that Amabella has received.

"After yet another fight, Celeste makes a bold move. Before the school's long-awaited fall fundraiser, Madeline (Reese Witherspoon) deals with fallout from her past, while Jane learns who's really been hurting Amabella at school," the episode listing on The Futon Critic reads.

The show will also unveil who was killed in the small town of Monterey and who was responsible for the murder, as teased from the episode 7 promo of "Big Little Lies."

Meanwhile, Kidman shared in an interview with Vulture how she was extremely invested when she took on the role of Celeste.

According to the Hollywood actress and co-executive producer of the series, she felt "strange" and "uncomfortable" after acting out fight scenes and sex scenes in the show.

"After we shot some of the really, really violent scenes, I was in a lot of pain myself. ... It wasn't a good feeling, I have to say. But women go through this, so I wanted to tap into the truth of it, and I wanted to be real in those scenes, so that's what it required — an element of violence," Kidman explained.

Even though the HBO series has exhibited a lot of extreme scenes, Kidman teased that there's more coming in the finale episode and that her character is slowly finding her way out of her abusive relationship.

The finale episode of "Big Little Lies" will air on Sunday, April 2, at 9 p.m. EDT on HBO.