Netflix viewers are convinced they've cracked the Zodiac Killer case after a new documentary dropped on the platform. The identity of the notorious Zodiac Killer - who police recently cracked one of his codes 50 years later - remains shrouded in mystery,

This Is The Zodiac Speaking uncovers new and compelling evidence from the family he knew that Arthur Leigh Allen was indeed the mysterious murderer.

People who knew Arthur Leigh Allen as children say he confessed, drugged them, and brought them to the sites of Zodiac killer murders

The Zodiac Killer was never caught, and his identity remains a mystery to this day. Arthur Leigh Allen was the only suspect identified by police, and though others have popped up during the year – including a man who even confessed – he has remained at the center of the case since the investigation started.

A new documentary digs deep into the unsolved serial killer, known to taunt the press and police, with obscure letters.

This is the Zodiac Speaking is a new three-part documentary on Netflix about a serial killer in Northern California in the late 60s.