Did Nicole Kidman just reveal something HUGE about 'Big Little Lies'?

(L-R) Reese Witherspoon, Zoe Kravitz, Laura Dern, Shailene Woodley, Nicole Kidman and Meryl Streep attend the "Big Little Lies" Season 2 Premiere at Jazz at Lincoln Center on May 29, 2019 in New York City. (Photo by Dia Dipasupil/Getty Images,)

We all know the code. If your gal pal gestures madly at you to stop talking, then you stop, right? Looks like Nicole Kidman didn’t get the memo ahead of an interview she and the cast of Big Little Lies season 2 did with People magazine this week.

The group, which included Kidman, Reece Witherspoon, Meryl Streep and Laura Dern were fielding questions about the return of the Golden Globe-winning drama, when the Moulin Rouge actress was asked about Alexander Skarsgard, who played her abusive husband in series one.

Read more: Reese Witherspoon, Nicole Kidman, Meryl Streep join fellow Big Little Lies co-stars at NYC premiere

“He was the most incredible acting partner,” the Australian explained, before adding “and then he came back for season 2.” Co-star Witherspoon was the first react, trying to get her friend’s attention by motioning her to stop.

Why? Because Skarsgard’s character, Perry, dies at the end of the first series, which is what prompts the entrance of his mother, played by Meryl Streep, in season 2.

Kidman did her best to recover, explaining, “He has a little bit of a part in the sense of … the basis of … okay, I’ll be quiet. He didn’t abandon us. We’ll put it that way.”

But it was clear that some plot point had been revealed, albeit unintentionally. Streep did distract matters a little when asked about her part in the project, admitting that she never even read the script before saying yes.

Her reasoning? “It was the greatest thing on TV.”

Read more: It Only Took 1 Glimpse of Meryl Streep in Big Little Lies to Get Us SO Excited For Season 2

The second series of the HBO drama starts in the US on June 9 and reaches UK shores the next day. Critics are already calling it “very different and very good.