You can probably group the three "Paradise Lost" documentaries together as one unit, as filmmakers Joe Berlinger and Bruce Sinofsky spent 15 years looking into what turned out to be a gross miscarriage of justice in which three teenage boys were arrested and convicted of murder on very shaky ground. As the filmmakers kept returning to the story, the West Memphis Three were eventually freed from prison (albeit on Alford pleas that allowed them to assert their innocence without the prosecution having to admit a mistake had been made). HBO has been a great home to the documentary world over the last several decades, and the "Paradise Lost" trilogy is among the channel's signature non-fiction achievements.