Douglas Noel Adams (11 March 1952 – 11 May 2001) was an English author, screenwriter, essayist, humorist, satirist and dramatist. Adams was author of The Hitchhiker's Guide to the Galaxy, which originated in 1978 as a BBC radio comedy, before developing into a "trilogy" of five books that sold more than 15 million copies in his lifetime and generated a television series, several stage plays, comics, a video game, and in 2005 a feature film. Adams's contribution to UK radio is commemorated in The Radio Academy's Hall of Fame.Adams also wrote Dirk Gently's Holistic Detective Agency (1987) and The Long Dark Tea-Time of the Soul (1988), and co-wrote The Meaning of Liff (1983), The Deeper Meaning of Liff (1990), and Last Chance to See (1990). He wrote two stories for the television series Doctor Who, co-wrote City of Death, and served as script editor for its seventeenth season in 1979. He co-wrote the Monty Python sketch "Patient Abuse" which appeared in the final episode of Monty Python's Flying Circus. A posthumous collection of his selected works, including the first publication of his final (unfinished) novel, was published as The Salmon of Doubt in 2002.