First review of new Zodiac documentary

The San Francisco Chronicle just posted a review of the first episode of “The Hunt for the Zodiac Killer”, premiering on the History Channel at 10PM Eastern / 9PM Central on Tuesday November 14th.

The History Channel series focuses specifically on what is considered the Holy Grail of the investigation, one of four cryptograms sent by the killer. The cipher in question, called Z340, is a 340-character puzzle sent by Zodiac to The San Francisco Chronicle that allegedly contains the identity of the killer.