A Night in Casablanca storyline for the film was intended to be a direct parody of "Casablanca," with the characters having similar-sounding names to the characters and actors in the 1942 film. Groucho Marx has said that an early draft named his character "Humphrey Bogus", a reference to the leading actor in "Casablanca," Humphrey Bogart. Warner Bros. did not actually litigate, or even threaten to litigate, but it did issue a formal inquiry to the Marx Brothers concerning the plot and script of the film. The Marx Brothers exploited the situation for publicity, making it appear to the public that a frivolous lawsuit was
Casablanca (film) up where the film leaves off, and also tells of Rick's mysterious past in America. The book met with little success. David Thomson provided an unofficial sequel in his 1985 novel "Suspects". There have been two short-lived television series based upon "Casablanca", both sharing the title. The first, which aired on ABC as part of the wheel series "Warner Bros. Presents" in hour-long episodes from 1955 to 1956, is a Cold War espionage program set contemporaneously with its production, and starred Charles McGraw as Rick and Marcel Dalio, who played Emil the croupier in the movie, as the police chief.