To rescue Joelle from further torture by the Russians, Deeks and NCIS must offer up Anna as bait to Katya.

To rescue Joelle from further torture by the Russians, Kensi and NCIS must offer up Anna as bait to Katya.

A member of the team is the victim of deep fake video on NCIS: Los Angeles. "Imposter Syndrome" is the 15th episode of the show's 12th season.

Kensi and the team work with a deaf engineer to retrieve some stolen tech on NCIS: Los Angeles. "Signs Of Change" is the 16th episode of the show's 12th season.

When military-grade technology is stolen, a deaf engineer, Sienna Marchione, who is the only member of her team to survive the theft, helps Callen and NCIS track down the tech before it's taken out of the country.

When military-grade technology is stolen, a deaf engineer, Sienna Marchione, who is the only member of her team to survive the theft, helps Sam and NCIS track down the tech before it's taken out of the country.

When military-grade technology is stolen, a deaf engineer, Sienna Marchione, who is the only member of her team to survive the theft, helps Nell and NCIS track down the tech before it's taken out of the country.

Kensi receives a threatening postcard from David Kessler (Frank Military), the sociopath who is obsessed with her.

Fatima and NCIS investigate the shooting of a militarized dolphin equipped with a Russian microchip.

While Callen suspects Hetty of keeping secrets about his past and Joelle surfaces in her quest to capture Katya, NCIS must track down an informant whose life is in danger. Also, Kensi and Deeks work to expand their family,

Joelle surfaces in her continued quest to capture Katya.

NCIS must track down an informant whose life is in danger.