Jon Ronson is an author with some interesting news: There are more psychopaths out there than you think. We’re not talking stabbing-in-the-shower maniacs, we’re talking seemingly ordinary people. How do you know if someone is a psychopath? Well, you could do what Megan does to her husband Craig – get them to take a 20-point test to determine where they are on the psychopath spectrum. How does this affect their relationship? Find out in Episode Four of Couple Thinkers.