I have marked this as "not interested", although I did, in fact, watch the first 25 minutes or so, then flicked ahead to the final 10 minutes, to see the "twist" ending I had read about.
I have had this one sitting around for well over a year unwatched, and decided finally to put it on. Wow. Now I see how I waited so long, and I wish I'd gone one step further and never brought in the house to start with!
It's rare for me to see an indie movie and be so totally bored by it. I expected something better from Steve Buscemi. Sienna Miller I never really rated to start with, so I guess it was obvious I would not care about her vapid actress character either. Honestly these are the two most boring people in a film and you are expected to sit and watch them exclusively for 80 minutes. That is a short running time, but believe me, it doesn't feel short. 25 minutes of it did not feel short. I am glad I skipped ahead rather than waste my time, though I honestly I could have more constructively just jumped on IMDB and read the spoilers. That would have gained me an additional 10 minutes back of my life.
This story does not ring true in any way. Avoid it. Don't say I didn't warn you...