Marc Schuster has written extensively on science-fiction and popular culture. An English instructor, he teaches composition, literature and film at Montgomery County Community College. He lives in Havertown, Pennsylvania. Tom Powers is a college lecturer who teaches composition courses. Along with Marc Schuster, he is the coauthor of The Greatest Show in the Galaxy: The Discerning Fan's Guide to Doctor Who (McFarland 2007). He lives in Blue Bell, Pennsylvania.