Interviewed by Michael Medina Cecil Castellucci does it all. In addition to writing for DC Comics (Batgirl; Shade, the Changing Girl; Female Furies), she pens music, opera librettos, novels, and everything in between. With her new graphic novel, Shifting Earth (illustrated by Flavia Biondi and colored by Fabiana Mascolo), the award-winning and New York Times bestselling author brings a “hope…