JustWatch
S01 Episode 1
The New Suspect
After gaining unprecedented access to confidential files, investigators find a cypher that may hold the key to the Zodiac Killer's identity, as well as a link between the murderer and an unsolved cold case.
41 mins · Tue, 14 Nov 2017
S01 Episode 2
The Military Connection
The team find clues that the killer may have been in the US Armed Forces, as the supercomputer pinpoints symbols in the code that only a scarce few could have known.
42 mins · Tue, 21 Nov 2017
S01 Episode 3
A New Code Uncovered
The team locates a curious new cipher associated with the Zodiac Killer, while the supercomputer identifies an odd lunar pattern that connects the killings. Plus, a riddle left by the killer may reveal the location of a body.
43 mins · Tue, 28 Nov 2017
S01 Episode 4
The Secret FBI Files
The hunt reaches high-gear as the FBI releases secret files on the mysterious Zodiac Killer, and a handwriting analyst connects the Zodiac's letters to a taunting letter mailed 3000 miles away in Albany, New York.
42 mins · Tue, 5 Dec 2017
S01 Episode 5
The Code Is Cracked
The Code Team announce that a team member has solved the zodiac's infamous Z340 code, which has eluded codebreakers for 50 years.
43 mins · Tue, 12 Dec 2017