Callen and the NCIS: LA team confront their vengeful adversary, the Chameleon, when an undercover case ignites a deadly mind game orchestrated by the criminal mastermind, on a special … Callen and the NCIS: LA team confront their vengeful adversary, the Chameleon, when an undercover case ignites a deadly mind game orchestrated by the criminal mastermind, on a special two-hour season finale of NCIS: LOS ANGELES, Tuesday, May 15 (9:00-11:00 PM, ET/PT) on the CBS Television Network.

Airdate: 05/15/2012