Netflix is the go-to streamer for top-notch true-crime documentaries, and they take a particular interest in serial killer cases. They have covered a lot of the most famous killers in history, like The Night Stalker, Jeffrey Dahmer, John Wayne Gacy, and they are set to feature the most famous unsolved serial killer in a series later this month with This Is The Zodiac Speaking. But, there is one serial killer Netflix has yet to feature in detail, and that is Dennis Rader: The BTK killer who stalked Wichita, Kansas in the 70s, 80s and 90s.