A murder mystery with a twist. A guy (Samuel L Jackson), ex-cop, who runs a business cleaning up after murders/suicides. He attends the scene of a murder to clean up, and no one is there so he cleans up and leaves. Only thing is he forgets to return the key, when he does the person who is at the house knows nothing about it. Anyway it turns out the cleaner has a past, his wife was murdered and the murderer was killed in prison.
The cleaner then find himself getting more and more involved in the case, he has essentially been stitched up. His ex partner then gets incvolved to try to help him resolve the issues, and police corruption raises it head and it seems like there is no way out.
A great thriller of a film, I would recommend seeing it.