Seitz, Crystal: - Crystal Seitz is a young adult contemporary fantasy writer. A Viking at heart, Crystal battles Crohn's disease and raids libraries for all the books on Norse mythology she can find. She works in marketing and web design, but only because she can't be a professional shield-maiden. She has a penchant for mythology, history, and all things creative. When she isn't writing, Crystal can be found doing archery, drawing, or rewatching Game of Thrones.