Hand-to-Hand is the nineteenth episode of NCIS: Los Angeles Season One. It also marks the first appearance of LAPD/NCIS liaison officer Detective Marty Deeks.
A Marine and an MMA fighter is found dead outside a nightclub and the team suspect that it might be a revenge-killing, forcing Sam to go undercover to find who is responsible.
A Marine who lost his left eye while serving in the war. He was also the group's platoon sergeant and is responsible for killing both Daniel Zuma and Craig Mangold.