Charlize Theron is all about being tough this year.

Just off the huge box office success of her post-apocalyptic Mad Max: Fury Road comes Dark Places.

In the film, an adaptation of Gone Girl author Gillian Flynn's novel of the same name, Theron plays a woman who gets involved with a club that tries to solve notorious crimes to find out what happened when her brother apparently killed their family when he was still in high school.

In the exclusive clip above, Theron confronts her brother (House of Cards' Corey Stoll) in prison.

Stoll says he confessed to the crime for the attention. "I was a teenage boy in a house full of girls," Stoll says. "At school I was the kid that nobody paid attention to. And in the courtroom, people were scared of me. I was a badass."

"A badass who killed his family," Theron sneers.