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 also wrote many radio scripts, particularly for the Suspense radio anthology series in America and for its UK equivalent Appointment With Fear introduced by Valentine Dyall, as well as many other dramas for the BBC, and some screenplays. His 1943 half-hour radio play Cabin B-13 was expanded into a series on CBS during 1948–49 for which Carr wrote all 23 scripts, basing some on earlier works or re-presenting devices that Chesterton had used. The 1943 play Cabin B-13 was also expanded into the script for the 1953 movie Dangerous Crossing, directed by Joseph M. Newman and featuring Michael Rennie and Jeanne Crain. Carr worked extensively for BBC Radio during World War II, writing both mystery stories and propaganda scripts. During the late 1940s he hosted Murder by Experts transmitted by Mutual radio. He introduced works by other mystery writers who were the week's guest writers. The show originated from Mutual's main station WOR in New York City.