David Fincher's chilling drama based on actual events in the 1960s and '70s recounts the infamous actions of a cryptic killer who stalked the streets of San Francisco in an executioner's hood and left clues about his crimes in the newspaper. Jake Gyllenhaal -- flanked by an impressive ensemble cast that includes Robert Downey Jr., Mark Ruffalo and Chloë Sevigny -- stars as the reporter who went on to write a best-selling true-crime book.- Netflix