The actresses also tell EW why they decided to star in Hulu’s true-crime thriller regardless of the genre.

“Since having children, completely can’t watch it,” Knightley tells EW.

“Totally terrified.”

Boston Strangler – The film follows Loretta McLaughlin (Keira Knightley), a reporter for the Record-American newspaper, who becomes the first journalist to connect the Boston Strangler murders. As the mysterious killer claims more and more victims, Loretta attempts to continue her investigation alongside colleague and confidante Jean Cole (Carrie Coon), yet the duo finds themselves stymied by the rampant sexism of the era. Nevertheless, McLaughlin and Cole bravely pursue the story at great personal risk, putting their own lives on the line in their quest to uncover the truth. Loretta McLaughlin (Keira Knightley), shown. (Photo courtesy of 20th Century Studios. © 2022 20th Century Studios. All Rights Reserved.)

Keira Knightley in ‘Boston Strangler’.HULU

Her costar Coon also cites motherhood for her falling out with true crime.

“I have to say, having children has complicated my relationship to it,” she says.

It took two women to recognize what was going on and to highlight its importance."

Boston Strangler – The film follows Loretta McLaughlin (Keira Knightley), a reporter for the Record-American newspaper, who becomes the first journalist to connect the Boston Strangler murders. As the mysterious killer claims more and more victims, Loretta attempts to continue her investigation alongside colleague and confidante Jean Cole (Carrie Coon), yet the duo finds themselves stymied by the rampant sexism of the era. Nevertheless, McLaughlin and Cole bravely pursue the story at great personal risk, putting their own lives on the line in their quest to uncover the truth. Jean Cole (Carrie Coon), shown. (Photo courtesy of 20th Century Studios. © 2023 20th Century Studios. All Rights Reserved.)

Carrie Coon in ‘Boston Strangler’.HULU

Knightley adds, “It’s an incredible privilege to highlight the legacy of these two extraordinary women.

It’s really important to see women struggle and see women not necessarily always succeed and yet still try.

It’s the resilience that I found unbelievably inspiring.

That’s what they did.”

Coon is excited for audiences to see how the two women worked together to catch the killer.

“Here were two women working closely on a case and continuing to support each other throughout their careers.

So often in storytelling, women are pitted against each other.

So often in our careers, we’re pitted against each other.

The more we can lean into that allyship, the more rapidly things will change.

We’ve got a long way to go, so it’s a good start.”

Boston Stranglerdebuts Friday, March 17 on Hulu.

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