Ted Bundy, Steven Avery and Scott Peterson are all convicted killers, as well as household names. America has a bit of an obsession with true-crime series that cable networks and streaming services seem all too happy to cash in on. Investigation Discovery is a whole channel dedicated to the genre, with shows like "Wives With Knives" and "Fear Thy Neighbor." So what is behind the fascination with killers? InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.