Six of television's top drama series bosses- Sam Esmail (Mr. Robot), Julian Fellowes (Downton Abbey), Nina Jacobson (American Crime Story), Marti Noxon (UnREAL, Girlfriends' Guide to Divorce), Melissa Rosenberg (Jessica Jones) and John Ridley (American Crime)- open up about the stories that made them genuinely nervous, diversity in Hollywood and what it takes to cast their shows.

Salim Akil - "Black Lightning" (CW) Jason Blum - "Sharp Objects" (HBO) Simon Kinberg - "Legion" (FX) Robert Kirkman - "The Walking Dead" (AMC) Shawn Levy - "Stranger Things" (Netflix) Jonathan Nolan - "Westworld" (HBO) Melissa Rosenberg - "Jessica Jones" (Netflix)