A Killer Story
HBO's three part true crime documentary digs into the 2002 Topeka murders of Mike Sisco and Karen Harkness and the two decade legal saga that followed, and it wisely spends as much time on the amateur investigators as the crime. Eileen and Keen Umbehr, a Kansas couple who became obsessed with the case after reading about it, spent years pushing a theory that prosecutors eventually used to convict Dana Chandler, and director Matthew Galkin builds the series around an uncomfortable question: what happens when true crime fans become part of the story?