The Spiderwick Chronicles is debuting on The Roku Channel this weekend, and it marks the latest adaptation of Tony DiTerlizzi and Holly Black's beloved book series. There was a film adaptation of the books back in 2008, but the new show's stars promise the upcoming series will be quite different. ComicBook.com recently had the chance to chat with some of the show's cast, including Christian Slater (Mulgarath) and Joy Bryant (Helen Grace). During the interview, the actors talked about how dark the new show gets.