It didn’t take long for Ashley Cullins’ new book on the “Scream” franchise to become a New York Times bestseller. Kevin Williamson even referred to it as “the definitive story of Scream.” Tune in for an in-depth discussion about writing “Your Favorite Scary Movie: How the Scream Films Rewrote the Rules of Horror,” the many interviews Ashley landed with various cast and crew members (plus surprising additions like John Carpenter and Meryl Streep), and the overall vibe surrounding the upcoming “Scream 7.”