Over the course of the last year, I have read nearly every crime book written by John E. Douglas and Mark Olshaker, the authors of Mindhunter, which inspired David Fincher's Netflix series of the same name. So when I was offered the chance to interview Douglas, a retired FBI profile who served as the basis for Scott Glenn's character in The Silence of the Lambs, I jumped at the opportunity. Douglas has come face-to-face with the worst evil this world has to offer, so it's fitting that he appears as an expert on Investigation Discovery'…