Geary Gravel is the author of the Edgar Rice Burroughs Universe novel John Carter of Mars: Gods of the Forgotten; the Philip K. Dick Award finalist The Alchemists; and the novels The Pathfinders, A Key for the Nonesuch, and Return of the Breakneck Boys. He has written several novelizations, including Hook, based on the Steven Spielberg film, and Batman: Mask of the Phantasm, based on the animated movie. He lives in western Massachusetts, where he worked for decades as a Sign Language Interpreter for the Deaf.