The Military Connection The Hunt for the Zodiac Killer : Season 1 Episode 2
TV-14 (TV rating) History 42m int(0)
Aired: November 21st, 2017 @ 10:00 PM EST on History
The team uncovers clues that the killer may have served in the U.S. Armed Forces, as the supercomputer identifies symbols in the code that would have been known to only a few when it was written; Sal and Ken find new evidence.