Harry Enfield stars as the eponymous detective in two full-cast dramatisations of Douglas Adams' Dirk Gently novels.
Douglas Noel Adams (11 March 1952 - 11 May 2001) was an English author, scriptwriter, essayist, humorist, satirist and dramatist. He is best known as the 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 computer game, and in 2005 a feature film. 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), Last Chance to See (1990), and three stories for the television series Doctor Who. source- Wikipedia