Holder and Linden now believe that a police officer framed Joe Mills for the murders of the young women found in the swamp. When they learn that an officer known to both of them lived next door to the first victim, they think they have their man. With Angie Gower having been killed, they fear for the worse when Adrian Seward goes missing as it seems the killer is now tying up loose ends. As Linden tries to tie things up, Carl Reddick is nowhere to be found, Holder is pulled in by Internal Affairs for questioning and Lt. Skinner's marriage has broken up forcing him to move out of his house. Linden finds the proof she needs to definitively identify the killer when she spots Kallie Leeds' ring.