On tonight’s “NCIS“ season 11, episode 13: “Double Back,” in an effort to find the terrorist Parsa, Gibbs and the NCIS team track down one of his cohorts using evidence from the drone attack. Meanwhile, an emotionally shaken McGee struggles with the ramifications of the incident..

“NCIS” series is based on the cases of the Naval Criminal Investigative Service. From murder and espionage to terrorism and stolen submarines, special agents traverse the globe to investigate all crimes with Navy or Marine Corps ties. With liberal doses of humor, the show focuses on the sometimes complex and always amusing dynamics of a team forced to work together in high-stress situations.

The agents include special agent Anthony DiNozzo; an ex-homicide detective; special agent Ziva David, probably the most dangerous team member; and special agent Timothy McGee, a MIT graduate with a genius talent in the computer field. Forensic specialist Abby Sciuto, also assists the team along with Medical Examiner Dr. Donald “Ducky” Mallard. Head of operations is NCIS Director Leon Vance, who is an intelligent and highly trained agent.

“NCIS” season 11, episode 13: “Double Back” airs tonight, Jan. 14 at 8:00 p.m. on CBS. Spoiler videos below.

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