The actress will now play Charlize Theron’s murdered mother in the Gillian Flynn adaptation, reports Deadline.
She had originally been cast as stripper Krissi Cates.
The film, Dark Places, is based off the novel written by Gillian Flynn. The story centers on a young woman, Libby (Charlize Theron), who has lived a haunted life after the supposed massacre of her family by her 15-year-old brother years earlier.
A secret society obsessed with notorious crimes locates Libby and pumps her for details to confront the fact that she might have been mistaken about the killings.
Hendricks is best known for playing Joan Holloway on the hit drama Mad Men
and had been recently announced as joining the Disney film Pirate Fairy
, starring alongside Tom Hiddleston
Chloe Grace Moretz (Carrie), Nicholas Hoult (Warm Bodies), Corey Stoll (Salt) and Tye Sheridan (Mud) will all be feature in the film.
Dark Places will arrive in cinemas in 2014.