Sorry to say the luke warm publicity put me off going to see this at the cinema - doh! Having said that, it really is a film tailor-made for watching quietly at home because the whole thing begins to feel like a giant book which has to be followed closely.
Expecting to find David Fincher having gone off the boil (what with everything he does now suffering from 'good, but not as good as Fight Club' syndrome) infact he has gone up a gear with this film. BUT, it is a slight of hand - in a long film the first hour or so is spent sort of spinning us the viewer around until the initial chaos of the early crimes subsides and we settle down for what has to be one of the best recent films about human obsession.
The central character, despite not being a policeman, becomes obsessed with finding out who the elusive 'Zodiac' was and that ultimately consumes/ruins his life. It's not a thriller in the conventional sense because the antagonist is always...unknown, or at least uncertain. Just beyond reach.
The 70s time-setting of it all gives it a kind of grounding which wouldn't have worked for something set in the now - you would never ever accept a police force these days effectively handing over their files to a civilian and saying: go on then, you solve it if you're so clever. But that's just what happened, and once we get onto that trip, it's totally compelling.
It's not perfect, and the main problem is the early part of the film. To be fair, what can you do when it's based on real events and those events are so weird? But at the start it almost feels like a horror film, and then it drifts a little while we wait to see if Robert Downey Jnr is going to be the main character - he isn't but such is his charismatic presence on screen these days, you just never know. Once things settle down though, it's a heck of a ride.
Special mention to the supporting cast - all brilliant, especially the policeman who continues to help Jake Gyllenhaal so long after the fact. And as for Gyllenhaal, this is the best thing he's done so far - understated but brilliant.
No it's not Fight Club, the power comes from the story and the human element, not flashy visual or gallows comedy. More like this please Mr Fincher...