Richard Burton Matheson (1926–2013) was an American author and screenwriter, primarily in the fantasy, horror, and science fiction genres. He is best known as the author of I Am Legend, a 1954 science fiction horror vampire novel that has been adapted for the screen four times, as well as the film Somewhere In Time for which he wrote the screenplay based on his novel Bid Time Return. Matheson also wrote 16 television episodes of The Twilight Zone, including "Nightmare at 20,000 Feet" and "Steel". He adapted his 1971 short story "Duel" as a screenplay directed by Steven Spielberg for the television film Duel that year. Seven of his novels and short stories have been adapted as motion pictures: The Shrinking Man, Hell House, What Dreams May Come, Bid Time Return (filmed as Somewhere in Time), A Stir of Echoes, Steel (filmed as Real Steel), and Button, Button (filmed as The Box). The movie Cold Sweat was based on his novel Riding the Nightmare, and Les seins de glace (Icy Breasts) was based on his novel Someone is Bleeding.