Modern noir, which plays its cards close to the vest until the final moments.
First off, this film is outstanding all the way through. The first 3/4 was a cutesy-sarcastic modern noir spin-off. And then in the last quarter is plays its hand, and it's a devestating one, dialing the tone up to 11, throwing in crazy tension and incredibly complex moral questions.
It's interesting to note that setting the tone as a cutesy indie comedy was incredibly disarming. In any other serious noir film, you'd be constantly trying to solve the murder yourself while watching. Indeed, for the first 1/4 I made mental notes of potential suspects. But it got old quick because you would potentially be spending all this mental energy analyzing a serious murder plot for a comedy, which is liable to just end with the janitor did it, or it was old man Jenkins, the ice cream shop owner. So I, and presumably others, gave and went along for the ride. Which is what makes the tonal shift at the end so much more powerful and unexpected.
It was strongly reminiscent of The Clovehitch Killer, but fully stands on its own. I think that having seen The Clovehitch Killer actually increased my enjoyment of the film, being that I used it as a baseline for indie murder mystery.
Don't hesitate to watch this one.