Several years after seeing this and liking it a lot the first time, I caught this again the other night and it is even better this time around. It’s a solid film about obsession and drive. It’s a well-known fact that the Zodiac was never caught. So this is not the focus of the movie. Instead it walks us through the years of the Zodiac investigation and the impact it had on those who worked on it, specifically a detective (Mark Ruffalo), a cartoonist/author (Jake Gyllenhaal) and a journalist (Robert Donwey Jr.) from the San Francisco Chronicle. The film perfectly captures that time and place. It is deftly directed and acted. We totally understand the obsession of these guys, especially the Gyllenhaal character who probably loses the most while tracking and -very likely- identifying who Zodiac was.