IMPACT x Nightline Season 4 Episode 13
Episode Title: Kill Code: Black Dahlia & Zodiac – Two Cases, One Killer?
Countries:
United States,
Airing Date: January 22, 2026
Stream the full IMPACT x Nightline Season 4 Episode 13 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.
The episode explores a controversial theory linking two of America's most famous unsolved crimes: the Black Dahlia murder and the Zodiac killings. An independent investigator follows a trail of cryptic messages, historical records, and forensic clues while asking whether both crimes could have been committed by the same killer.