Archer and Asher clash over a patient with close ties to Goodwin; after a patient is shot during a home invasion, Scott and Marcel help with the investigation; Maggie and Halstead work to protect a patient who is in the country illegally.
United States Secretary of Defence Wynn Crawford shuts down Gibbs' murder investigation and demands that Special Agents McGee and Torres be arrested.
Callen and the team confront their vengeful adversary, the Chameleon, when an undercover case ignites a deadly mind game orchestrated by the criminal mastermind.