
The Hunt for the Zodiac Killer
Throughout the early 1960s and 1970s, the Zodiac Killer, one of history's most famous unidentified serial murderers, terrorized America in a spree of heinous attacks, sending taunting letters and codes filled with bizarre and ancient symbols. This code has baffled some of the greatest minds in cryptology for over 50 years. "The Hunt For The Zodiac Killer" opens up a new investigation into the mystery of this twisted serial assassin. A team of top investigators and code-breakers, working in tandem with a super-computer, known as CARMEL, the first of its kind programmed to think like a killer. This team believes they may have broken a significant portion of the diabolically complicated code, Z340, and have been granted unprecedented access to police files, new witnesses, new clues, and the cooperation of representatives of the CIA and FBI.
- 2017-2017
- 1 season
- History Channel
- Suspense, Documentary, Reality
- TV-14
Throughout the early 1960s and 1970s, the Zodiac Killer, one of history's most famous unidentified serial murderers, terrorized America in a spree of heinous attacks, sending taunting letters and codes filled with bizarre and ancient symbols. This code has baffled some of the greatest minds in cryptology for over 50 years. "The Hunt For The Zodiac Killer" opens up a new investigation into the mystery of this twisted serial assassin. A team of top investigators and code-breakers, working in tandem with a super-computer, known as CARMEL, the first of its kind programmed to think like a killer. This team believes they may have broken a significant portion of the diabolically complicated code, Z340, and have been granted unprecedented access to police files, new witnesses, new clues, and the cooperation of representatives of the CIA and FBI.
Season 1 Episode Guide
5 Episodes 2017
Episode 1
The New Suspect
Tue, Nov 14, 2017 41 mins
In the premiere of a chronicle of the hunt for California's Zodiac Killer, who murdered at least five people in the San Francisco Bay Area in the late 1960s and early '70s, a prime suspect with code training emerges.

Episode 2
The Military Connection
Tue, Nov 21, 2017 42 mins
The hunt uncovers clues that the Zodiac Killer may have served in the U.S. Armed Forces, as the team's supercomputer identifies strange symbols in the killer's code that would have been known to only a few when it was written.

Episode 3
A New Code Uncovered
Tue, Nov 28, 2017 43 mins
A mysterious new cipher related to the Zodiac Killer is discovered, while the team's supercomputer uncovers a strange lunar pattern linking the murders. Also: A taunting riddle by the killer may lead to a body; and a second prime suspect emerges.

Episode 4
The Secret FBI Files
Tue, Dec 5, 2017 42 mins
The hunt goes into high gear as the FBI releases secret files; and a handwriting analyst connects the Zodiac Killer's letters to a taunting correspondence mailed 3000 miles away in Albany, N.Y.

Episode 5
The Code is Cracked
Tue, Dec 12, 2017 43 mins
Sal and Ken investigate the epicenter of the murders. A team member solves the Zodiac's infamous Z340 code, which has eluded codebreakers for 50 years.
