S1 E2 ∙ The Military Connection ∙
The hunt uncovers clues that the Zodiac Killer may have served in the US Armed Forces, as the team's supercomputer identifies strange symbols in the killer's code.
G
Contains Mature Themes
As investigators revisit the case of California's Zodiac Killer, a suspect with code training emerges.
The hunt uncovers clues that the Zodiac Killer may have served in the US Armed Force.
A mysterious new cipher related to the Zodiac Killer is discovered.
A handwriting analyst studying the Zodiac Killer's letters makes a startling connection.
A team member solves the Zodiac's infamous Z340 code.