Embedded Player Movies, television shows and books build entire worlds with characters, and now more than ever, fans are expanding those worlds. Fan fiction can build a relationship between a creator and the fan base, inspire new material and even raise legal issues. Our guests are Amber Davisson, assistant professor at Keene State College, Petra Mayer, editor at NPR Books, Rebecca Tushnet, professor at Georgetown Law and head of the legal committee of the Organization for Transformative Works, and Katherine Larsen, professor at George Washington University and author of Fangasm: Supernatural Fangirl.