Green and Cassady look into the murder of Carl Mullaly, who had recently been profiled on HardFocus, a magazine programme that identifies sex offenders. The only witness is an eight-year-old girl and detectives soon make an arrest, but learn the tabloid talk show may have been more involved than it initially appeared

A cook from a US Navy destroyer tells McGee and Gibbs he believes someone is stalking him with the intention of trying to make him poison the crew, and a picture on a stolen phone leads the team to a group testing the psychological effects of surveillance. Meanwhile, Richard Parsons from the Inspector General's office closes in on Ziva as he investigates the death of Ilan Bodnar, the man who killed her father. Guest starring Colin Hanks

The team investigates when Navy Seal Chad McBride's wife receives a package from Riyadh in Saudi Arabia containing her husband's severed head, which Palmer discovers contains very high levels of radiation. McBride's commanding officer reveals the soldier was on a top-secret reconnaissance mission and asks Vance not to disclose the details to anyone. Meanwhile, Richard Parsons tries to get Gibbs to take responsibility for the many unnecessary deaths for which he holds the NCIS team accountable

The American crime drama returns with the team still reeling from the Department of Defence investigation, with Ziva, McGee and Tony having handed in their badges. Parsons continues his inquiries into Gibbs and his agents, but events take a turn when an explosion kills the Secretary of the US Navy and seriously injures the director of Homeland Security. When attempts are made on the lives of Gibbs and Tony, it appears that all of the NCIS agents are in mortal danger. Starring Mark Harmon and Colin Hanks

The police discover a 12-year-old boy posted sinister threats to a girl in an internet chatroom and suspect his anger stems from sexual abuse. The trail soon leads Benson and Stabler to a billionaire known for his generous donations to charities and his hospitality to young house guests

An assistant district attorney is found strangled in his car in an area notorious for prostitution. Benson is shocked to realise she briefly dated the victim and refuses to believe he would have paid for sex. As investigations get under way, DNA evidence reveals the dead man might have been gay. Drama, starring Christopher Meloni and Mariska Hargitay

A man is arrested for assaulting his alcoholic wife, who is pregnant - but changes the focus of the case by trying to have her charged with neglect for drinking while expecting a baby. As Benson investigates, he discovers a child had previously been exposed to the harmful consequences of her thoughtless actions