John Dickson Carr (November 30, 1906 – February 27, 1977) was an American author of detective stories, who also published using the pseudonyms Carter Dickson, Carr Dickson and Roger Fairbairn. Carr is generally regarded as one of the greatest writers of so-called "Golden Age" mysteries; complex, plot-driven stories in which the puzzle is paramount. He was influenced in this regard by the works of Gaston Leroux and by the Father Brown stories of G. K. Chesterton. He was a master of so-called locked room mystery, in which a detective solves apparently impossible crimes. The Dr. Fell mystery The Hollow Man (1935), usually considered Carr's masterpiece, was selected during 1981 as the best locked-room mystery of all time by a panel of 17 mystery authors and reviewers. He was also an author of historical mystery. A resident of England for a number of years, Carr is often grouped among "British-style" mystery writers. Most (though not all) of his novels had English settings, especially country villages and estates, and English characters. His two best-known fictional detective characters (Dr. Gideon Fell and Sir Henry Merrivale) were both English.