A burial site found at a house in Virginia challenges the team to profile a case with ties to segregation.
Sean takes the blame for McCann's, Bobek's and Billy's murder. Boyd arrests Frank for carjacking. Damon and Nick attack Skelos. At mayor's office Boyd tells his theory on how Joe and Frank killed McCann, Bobek and Billy. Frank decides to take a psych leave.moreless
Frank testifies in court on Lady Belle case, a woman who was kidnapped and murdered. Joe notices he has a tail. Frank asks Cable to track activity on Katia's site, but he discovers that someone is watching Frank's online activity. Skelos threatens Maya's kids. Joe finds Katia.moreless
Frank finds Katia via videochat, but she shuts down the connection. He gets an internal source to track down Katia's chat site, but when they meet it doesn't go as he had planned. Joe puts April in Catholic school. Damon and Maya lose both the blind pig and The International.moreless
Joe regrets not killing Katia. Deputy Mayor yells at Lt. Dawson over the phone for not having results on McCann's murder case, so he puts pressure on Frank to get some results by the end of the day. Boyd refuses to share details from his case with Frank, but later shows him a file he has on Joe. A witness who saw two men putting McCann on the front seat before sending it to the river shows up.moreless
Frank and Joe's cover-up of their involvement in McCann's murder starts to fall apart when the autopsy reveals that McCann didn't drown in the river. Things get more heated up for them when the body found in McCann's trunk is identified, it belongs to an Internal Affairs confidential informant. Joe tells Frank that Katia is still alive.moreless
John Cooper's new boot, an Afghanistan war veteran, rubs him the wrong way. Lydia Adams grapples for the perfect balance of work and parent responsibilities. Elsewhere, Sammy Bryant files for custody against Tammi, and Ben Sherman hooks up with a new cop who has a dangerous attitude.moreless
The search continues for the missing girl. Sam's new career in reality television puts the light on some of his colleagues' personal lives. Sam's mother needs his help when her boss gets sick.moreless
Lydia and Ruben investigate the death of a young nanny that appears to be a suicide, but first they have to find the children who had been in her care. Ben makes matters worse when he tries to intervene in the life of a prostitute with a 13-year-old daughter who is about to follow her mother's career path. Jessica Tang gets good news about the boy she shot, but Cooper still believes she should admit what really happened.moreless
Jessica's past is revealed after she offers help to a veteran who is homeless. Meanwhile, Sammy takes care of a dog of the vet bill after he accidentally shoots it. Lydia and Ruben investigate the murder of a Good Samaritan as Lydia face a huge change in her life.moreless
After years of pursuit and a countless number of murders, Langston comes face-to-face with serial killer Nate Haskell inside the house where his killing spree began.
The battle lines are drawn as Locke puts his plan into action, which could finally liberate him from the island.
The Man in Black's final fate is determined, and one survivor must make the ultimate sacrifice to save the island, Meanwhile, in another life, the ones who might have been the survivors gather for a final time.moreless
Detectives Moretta and Bryant step in to aid Det. Salinger when he crashes into a light pole and members of a gang steal his weapon. Meanwhile, Det. Adams is taken aback when a man exposes himself outside her home.moreless
Detectives Bryant and Moretta are summoned to an alley in Los Angeles where the body of an unidentified woman is being used by street thugs for target practice. Meanwhile, Det. Moretta reveals the truth about his sister.moreless