Courtenay Hameister brings her friend Chelsea Cain, best-selling author of “Heartsick” and “Kill You Twice,” and there are indeed, some interesting places to go inside her head. It begins, as most interviews with ridiculously successful thriller-writers with properties optioned by FX do: On a D&D table, discussing the properties of the vorpal blade. From there we find out who really inspired the main characters of “Heartsick,” and how she gets those stories out of her, except of course, for the stories she doesn’t want to tell. Stories of chocolate and perineums. But that’s the kind of darkly comic landscape we’re working with here. Other topics include: Why the laugh isn’t always the most appropriate of human functions; and Matt Inman’s propsed Tesla museum: Is there actually a plan, or do we just love Tesla so much we’re hoping someone comes up with a good one. Because Bobby has a pretty good one.