Seldom does a film elucidate the culpability of our culture,of our society, in the mayhem and madness we often find in everyday life. According to Se7en, our culture is drifting through darkness. The mouthpiece for this thematic undercurrent is Somerset, a literate man who also happens to be a detective, a man who can read a clue ("This isn't going to be a happy ending") or Dante's Inferno with equal aplomb. He even provides the film's final thematic statement with a quote from Hemingway. His quirkiness, perhaps the outgrowth of a brilliant mind, is no worse than that of any prophet or seer of old, those harbingers of Biblical insight whom others always find kooky and offbeat. He is not well loved for his cynical, pessimistic outlook (such that his consuming motivation is to retire and get out of town). However, by the end it becomes clear that it is Somerset who sees our dark world with the prophet's particular clarity. (It is left to his partner Mills to find this out the hard way).
Working on us to reinforce this world as Somerset sees it is the film's astounding mise-en-scene, a disturbing film-noir setting developed by director David Fincher and cinematographer Darius Khondji. Flashlights barely illuminate the slimy walls of the roach-infested tenement of one victim and the dark bedroom of another. Rain pours down in buckets. Bird's-eye-view shots of downtown (the city is never named- a generic, everyman's kind of place) show dingy, sooty rooftops and grimy streets. Only the film's closing scene is in bright sunlight, which by then only serves as ironic counterpoint to what we see happening.
This is Somerset's vision; both inhabited and described by him. He finds a surprising fellow traveler in, not his partner, but the elusive killer John Doe. Doe shares the vision and provides an unsettling echo to the rumblings and teachings of Somerset. If one looks at life through the Somerset lens, one must admit that John Doe has a valid point. He and Somerset have arrived at the same conclusion, the difference between them being how they have responded. (Somerset longs to escape to some otherworldly realm in the country. Doe has taken action.)
Though gripping and fast moving, this is not an action film. It holds our interest through the workings of horror and mystery: a stark, film-noir detective piece. Except for one tense pursuit through halls and alleys in pouring rain, as well as the bit of ending action, there is surprisingly little violence. We see each murder, save two, after the fact, as a crime scene. This only makes the final act that much more suspenseful.
This is a very tight film. Elements within: dialogue, actions, lighting, setting, all of these tend to reinforce one another to paint a solid picture. It is a perverse logic that makes the final and seventh sin complete perfectly the circle of events begun with the first.
