CLIPS: Undercover Lives At Risk On New 'NCIS:LA'

A local gang kills an undercover agent, now the NCIS team must race to find the mole.

On NCIS: LA, law enforcement officers lives are on the line, and one undercover agent has already paid the ultimate price when his real identity was discovered. The murders are part of a local gang that videotapes the murder and puts it online.

Now it's a race against time to reveal the mole who sold out the agent, before more people are killed and more snuff videos are posted on the internet.

In these sneak peeks, we get a taste of the drama unfolding in the NCIS: LA headquarters, as Deeks, Callen and Hanna get into a heated debate, where Deeks is informed that he needs to be able to read his partners' intent to be a successful agent. Later, Deeks provides a distraction for Callen to make a risky, potentially life-threatening move.

This episode of NCIS: LA airs Tuesday, March 18 at 9/8c on CBS.