Gretchen Palmer

The team travels to Syria to capture a high-value target, but the mission quickly goes awry.

The mole has once again compromised the NCIS team as planted evidence results in the arrests of Callen, Sam, Granger and Deeks, on the day Under Secretary Duggan returns for Hetty's resignation.

The team gets a new lead in the mole investigation after an unknown assailant kills two men disguised as sheriff's deputies in front of Callen's home; Nell interviews a prison inmate who has information on the department's leak.

Fuller sends Hanson and Hoffs to defuse an explosive situation in a high school divided by racial tensions; guest J.A. Preston.

Stephanie, returning from her trip with Riley, is taken hostage by an environmental extremist; Mitch plays a practical joke on Garner and a new lifeguard.

Angela feels old when she takes an account with a trendy fashion designer whose staff consists of young women.