Often described as ‘the most famous unsolved murder case in American history’, the Zodiac Killer’s brutal spree in the 1960s and ‘70s attracted a flock of amateur investigators before true crime was even a thing. But now it is, and as per the law, Netflix is mandated to make a three-part documentary series about it. Titled This is the Zodiac Speaking, the show confusingly omits the real-life chapter that inspired this title, and presents, instead, a new angle to the case, one that has been flogged to death by documentarians, filmmakers, and podcasters alike. This is the Zodiac Speaking has the same fast-paced narrative that has come to define most of these Netflix true crime content; the tone is perpetually ominous, the violence and mayhem is circled and highlighted, cheap recreations are used to heighten the drama. The ending, invariably, is anti-climactic. But the show attempts to sidestep this inevitability by picking its lane and sticking to it. In minute one, This is the Zodiac Speaking identifies a possible suspect — in fact, the only person who was ever publicly named by the police as a person of interest — and proceeds to move heaven and earth in an effort to corroborate its claims.