Watch Free Online HD Moviesjoy. Set against the backdrop of the Pacific Northwest in the early 1980s, Green River Killer “follows two conflicted detectives (Arquette and Stahl) as they descend into the murky depths of an investigation that would define their careers and haunt their lives. As they pursue a predator who blends seamlessly into everyday life, a man who is no one and everyone. The line between justice and obsession blurs, revealing the true cost of confronting evil.”