A rush-hour fender-bender on New York City’s crowded FDR Drive, under most circumstances, wouldn’t set off a chain reaction that could decimate two people’s lives. But on this day, at this time, a minor collision will turn two complete strangers into vicious adversaries. Their means of destroying each other might be different, but their goals, ultimately, will be the same: Each will systematically try to dismantle the other’s life in a reckless effort to reclaim something he has lost.