On radio, there were several adaptations of the film. The two best-known are a thirty-minute adaptation on The Screen Guild Theater on April 26, 1943, starring Bogart, Bergman, and Henreid, and an hour-long version on the Lux Radio Theater on January 24, 1944, featuring Alan Ladd as Rick, Hedy Lamarr as Ilsa, and John Loder as Laszlo. Two other thirty-minute adaptations were aired, one on Philip Morris Playhouse on September 3, 1943, and the other on Theater of Romance on December 19, 1944, in which Dooley Wilson reprised his role as Sam.[162]
On television, there have been two short-lived series based upon Casablanca, both sharing the title. The first Casablanca aired on ABC as part of the wheel series Warner Bros. Presents in hour-long episodes from 1955 to 1956. It was a Cold War espionage program set contemporaneously with its production, and starred Charles McGraw as Rick and Marcel Dalio, who had played Emil the croupier in the movie, as the police chief.[163] The second Casablanca, broadcast on NBC in April 1983, starred David Soul as Rick and was canceled after three weeks.[156]
The novel As Time Goes By, written by Michael Walsh and published in 1998, was authorized by Warner.[164][165] The novel picks up where the film leaves off, and also tells of Rick's mysterious past in America. The book met with little success.[166] David Thomson provided an unofficial sequel in his 1985 novel Suspects.[167]
Julius Epstein made two attempts to turn the film into a Broadway musical, in 1951 and 1967, but neither made it to the stage.[168] The original play, Everybody Comes to Rick's, was produced in Newport, Rhode Island, in August 1946, and again in London in April 1991, but met with no success.[169] The film was adapted into a musical by the Takarazuka Revue, an all-female Japanese musical theater company, and ran from November 2009 through February 2010.[170]
CasablancaBox, written by Sara Farrington and directed by Reid Farrington, premiered in New York in 2017 and was an imagined "making of" the film. It was nominated for two 2017 Drama Desk awards, Unique Theatrical Experience and Outstanding Projection Design. The New York Times described it as "a brave, almost foolhardy undertaking, presenting the backstage drama during the making of Casablanca".[171]
