In Louisville, a community is outraged when a married couple is gunned down at home in front of their two young children. Det. Kevin Trees and the homicide team hit the streets hoping the community's strong reaction to the killing will trump the neighborhood's long-standing code of silence. Armed with expert interrogation techniques and a polygraph, Trees navigates his way through false leads and deceptive witnesses. As he works his way toward a suspect, the investigation takes a shocking turn.