The notion of traveling forward or backward across history, of changing the events of your own life or those which came before you or those that have yet to occur - has fascinated eminent writers for a century, from Edgar Allan Poe's "Three Sundays in a Week" to Isaac Asimov's "What If" to Rod Serling's "The Odyssey of Flight 33". Time travel fiction is by no means confined to the science-fiction genre; it is one of the most fluid forms of storytelling and crosses over between literary fiction (Rudyard Kipling's "Wireless") and seminal science fiction (Ray Bradbury's "A Touch of Petulance").