The Hunt for the Zodiac Killer

About the Series

The Zodiac Killer is one of the most famous and unidentified serial murderers in American history. The Zodiac Killer sent cryptic messages and taunting letters about their atrocious acts. In these cryptic messages, ancient and bizarre symbols were inserted and the Zodiac Killer claims to have hidden his real name within the code. The code has stumped and defied even the be ...

S1 E5

The Code is Cracked

Aired on Dec 12, 201743m

Sal and Ken investigate San Francisco, the epicenter of the Zodiac Killer murders, as the Code Team announces extraordinary news: A team member has solved the Zodiac's infamous Z340 code, which has eluded codebreakers for 50 years.

S1 E4

The Secret FBI Files

Aired on Dec 05, 201742m

The FBI releases secret files on the mysterious Zodiac Killer, and a handwriting analyst connects the Zodiac's letters to a taunting letter mailed 3,000 miles away in Albany, NY.

S1 E3

A New Code Uncovered

Aired on Nov 28, 201743m

The hunt uncovers a bizarre new cipher related to the Zodiac Killer, while the team's supercomputer uncovers a weird lunar pattern linking the killings. A second prime suspect emerges.

S1 E2

The Military Connection

Aired on Nov 21, 201742m

The hunt uncovers clues that the Zodiac Killer may have served in the U.S. Armed Forces, as the team's supercomputer identifies symbols in the killer's code that only a few would know.

S1 E1

The New Suspect

Aired on Nov 14, 201741m

A new hunt for the Zodiac Killer gains unprecedented access to files, unearthing a complicated cypher that may contain the killer's name. A prime suspect with code training emerges.