Chain Lightning is a 1950 American aviation film based on the story "These Many Years" by black-listed writer Lester Cole (under the pseudonym "J. Redmond Prior"); the screenplay was written by Liam O'Brien and Vincent B. Evans. During World War II, Evans had been the bombardier on the Boeing B-17 Flying Fortress Memphis Belle. The film stars Humphrey Bogart as a test pilot, Eleanor Parker and Raymond Massey. Cole's credit on the film was officially restored by the Writers Guild of America in 1997, although the only screen versions have "suggested by a story by J. Raymond Prior" listed. Created in the postwar era to reflect the progress in aviation and aeronautics, it is a fictional account of a US company engaged in creating and producing high speed jet aircraft. Completed in early 1949, Chain Lightning was one of Humphrey Bogart's final Warner Bros. films, ending a 20-year association. Due to the appeal of the subject, the film was released in multiple versions for 11 different countries; in Germany, it was known as Des Teufels Pilot.