Episode 170 aired July 16, 1955 on CBS Radio. Troy Carver is an aging ex lawman with poor eyesight being chased by a dirt farmer who wants revenge for the killing of his brother two years before. Gunsmoke is an American western radio series, which was developed for radio by John Meston and Norman Macdonnell. The series ran for nine seasons and was broadcast by CBS. The first episode of the series originally aired in the United States on April 26, 1952, and the final first-run episode aired on June 11, 1961. During the series, a total of 480 original episodes were broadcast, including shows with re-used or adapted scripts. A television version of the series premiered in 1955.