Zodiac

Most detective films spend their runtime building toward an answer. Zodiac spends its runtime building toward the absence of one, and somehow that is where the tension lives. This is a film about the paperwork of not knowing, and it is riveting.

The case for it

David Fincher stages the Zodiac killings themselves early and briefly, then spends the remaining hours on newsrooms, evidence lockers, handwriting samples and the slow erosion of the men trying to make sense of them. There is no music sting when a lead pays off, because leads rarely pay off. Instead there is a phone call that goes nowhere, a filing cabinet that has been misplaced, a decade passing between scenes. The film trusts that watching competent people fail to close a case can be just as gripping as watching them succeed, and it is right.

The performances carry this. Jake Gyllenhaal’s cartoonist becomes fixated in a way that looks less like heroism than a private compulsion he cannot switch off. Mark Ruffalo’s detective works the case with the patience of a man who has learned that most of his work will not matter. Robert Downey Jr, as the journalist, gives you the version of obsession that burns out rather than resolves. None of them get a triumphant scene. That is rather the point.

Fincher’s control of tone is the real achievement. The film is procedural in the driest sense — you watch people cross-reference typewriters and argue about jurisdiction — and yet it never sags. Every scene is doing something quiet to your nerves, whether it is a single unbearable sequence in a basement or simply the accumulation of years shown through changing haircuts and worsening light.

Who it suits, and the reservation

This is for people who like their tension slow-built and their mysteries left, to a real degree, unsolved. If you want a detective film that snaps shut with a satisfying final reveal, this is not it — and if that sort of ending matters to you, you should know that going in, because the film’s approach to its ending is one of its more discussed features and best experienced without expectation either way.

The reservation is a fair one: at nearly three hours, with a structure that deliberately refuses momentum, Zodiac can feel gruelling on a first watch. Some stretches are administrative by design, and viewers wanting propulsion rather than accumulation may find themselves checking the runtime. It rewards patience more than it rewards a casual evening. But for a film willing to sit with unresolved dread rather than manufacture a resolution, this is about as good as the genre gets.