EXCLUSIVE: “The Killing” star Mireille Enos is in negotiations to join Ruben Fleischer’s period crime pic “The Gangster Squad.”Enos will play Connie O’Mara, the pregnant wife of Josh Brolin’s character in the Warner Bros./Village Roadshow film. Not only does Connie keep her husband in line, but she also helps him pick the candidates for the titular squad. Amy Adams and Kate Winslet were previously considered for the role, which calls for roughly a week of shooting. In addition to Brolin, “Gangster Squad” stars Ryan Gosling, Sean Penn, Emma Stone, Anthony Mackie, Giovanni Ribisi, Michael Pena, Robert Patrick, Frank Grillo and Holt McCallany. Kevin McCormick and Dan Lin are producing the Will Beall-scripted pic through their respective banners Langley Park and Lin Pictures, whose Jon Silk is co-producing. Enos is up for an Emmy for her turn as Det. Sarah Linden on AMC’s crime series “The Killing.” She previously appeared on HBO’s “Big Love” and is currently filming Marc Forster’s “World War Z,” in which she plays Brad Pitt’s wife. Enos is repped by Innovative Artists and Authentic Talent and Literary Management.