Two murders that shook the small town of Ada, Okla., in the 1980s gained national attention and even led to renowned author John Grisham writing a nonfiction book about the crimes. Now Grisham serves as an executive producer for this six-part docuseries -- which shares its name with his 2006 book -- that takes a closer look at the notorious deaths. "The Innocent Man" includes interviews with the victims' friends and family members, Ada residents, attorneys, journalists and others involved in the case -- including Grisham himself. The series, directed by Clay Tweel ("Gleason"), blends new footage with compelling archival video and photos.