I saw this movie a year ago maybe, it's about two detectives or cops who are actually close friends, they work on a case where the suspect was seen killing a prostitute, witness says he wore a white collar. One of the cops has a younger brother who recently got out of jail and tries to "turn his life around" by taking a job at a nearby church. So they suspect him. And this guy eventually kidnaps the daughter of his big brother's friend. When they catch up to him, eventually, the cop ends up killing his own brother to save the girl. But at the end it turns out that this cop is actually the criminal and only killed his brother because he didn't want to get caught