Part of what has always set “Paradise Lost” apart from other courtroom thrillers is that it is not simply about the legal proceedings; it’s a portrait of how grief and anger convulse all sides. Viewers get to know the parents of the victims as well as the parents of the accused. All are accorded enough screen time to emerge with genuine complexity. When he is first introduced, John Mark Byers, the stepfather of Christopher Byers, rants in the woods about how he plans to desecrate the teenagers’ graves after they die. A few scenes later, he has cleaned himself up and is leading his church in song with a surprisingly lovely and deep singing voice.