Keira Knightley has signed up to star in Matt Ruskin drama, ‘Boston Strangler’ for 20th Century Studios.

Written and directed by Ruskin, the movie is based on the infamous Boston Strangler murders, told from the standpoint of Loretta McLaughlin, the first reporter to connect the murders and break the story of the Strangler. She and fellow reporter Jean Cole challenged the sexism of the early 1960s to report on the city’s most notorious serial killer and worked tirelessly to keep women informed. Loretta pursued the story at great personal risk and uncovered corruption that cast doubt on the true identity of the Boston Strangler.

Knightley will play the role of McLaughlin. Ruskin conducted extensive research that included tracking down the families of McLaughlin and Cole and their actual research from the early ’60s.

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Ridley Scott and Kevin Walsh of Scott Free will produce alongside Tom Ackerley and Josey McNamara of LuckyChap Entertainment.

Sam Roston will oversee for Scott Free and Bronte Payne for LuckyChap. Sarah Shepard is overseeing for 20th Century Studios.

Knightley was last seen in ‘Misbehaviour’ alongside Gugu Mbatha-Raw and Jesse Buckley. Her upcoming projects include ‘Silent Night’ with Lily-Rose Depp and Annabelle Wallis and ‘Charlotte’ in which she lends her voice alongside Marion Cotillard and Brenda Blethyn.