NCIS: Los Angeles 12x15 "Imposter Syndrome" Season 12 Episode 15 Promo Trailer HD - 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, on NCIS: LOS ANGELES, Sunday, May 2nd on CBS.