People lie. The evidence doesn't. It's the foundation of every conviction - with evidence, justice is possible; without evidence, guilty men walk free. No one knows the importance of evidence more than Inspector Sean Cole. After he lost his wife in a brutal murder, the only evidence the cops had was accidentally destroyed, and it ruined his faith in the system. Fortunately his partner and best friend, Bishop, is there for him, pulling him back to work, pushing him forward, as they both try solve these complex cases set against the beautiful streets of San Francisco.