Season 12, Episode 18 – “A Tale of Two Igors” Deeks is kidnapped by an associate of Kirkin’s who is in need of his help. Also, NCIS investigates the shooting of a militarized dolphin equipped with a Russian microchip and Beale makes Nell an interesting offer.
Season 12, Episode 17 – “Through the Looking Glass” When a Naval Intelligence Officer is tortured and murdered, NCIS must work with Joelle, who informs them that other CIA operatives are being killed in the same way. Also, Kensi receives a threatening postcard from David Kessler, the sociopath who is obsessed with her
Season 12, Episode 16 – “Signs of Change” When military grade technology is stolen, a deaf engineer, Sienna Marchione, who always wanted to serve her country, and the only member of her team to survive the theft, helps Kensi and NCIS track down the tech before it’s taken out of the country.
Season 12, Episode 15 – “Imposter Syndrome” NCIS obtains a hard drive containing a realistic deep fake video of a deceased terrorist and must retrieve the dangerous technology behind it. However, when the team’s comms are highjacked during their mission, they find that one of their own has been a victim of its potential.