Jon Sklaroff

The murder of a gang member in Oakland forces Cho to confront his murky past. It emerges that the victim was an old friend of Cho's - and he is willing to go to extreme lengths to exact revenge.

Jason and the team rescue a Russian scientist and his wife, while Chinese and Russian Special Forces work to stop them. Clay endures his first day with Jason's unit.

When a petty officer turns up dead backstage at a local bikini contest, Gibbs and the team are sent in to investigate.

Bowing to the pressures of his new job, Nick starts using cocaine again even though he must square off against his father in court. Meanwhile, Alvin defends a woman accused of child abuse.

Lulu and Nick continue their clandestine sexual affair, and Burton takes on a new role as a foster parent.

In 1958, Maura's femininity causes a family conflict; in 1966, Shelly and Mort have a clandestine affair.