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Michelle Monaghan co-starred alongside Casey Affleck in the 2007 crime drama "Gone Baby Gone." The film, directed by Ben Affleck, follows private investigators Patrick Kenzie (Affleck) and Angie Gennaro (Monaghan) as they search for a missing young girl in Boston. Monaghan's portrayal of Gennaro, a tough and resourceful private investigator, received critical acclaim for its authenticity and nuance.