Matt Dillon (Gunsmoke) no uncertain terms that he had no interest whatsoever. (Wayne was arguably the cinema's foremost box office attraction at the time.) Warren stated that the inquiry had not been serious inasmuch as Wayne could not realistically have been expected to abandon a thriving movie career for a less certain and immensely less lucrative television role. Wayne did, however, recommend James Arness for the part and his offer to introduce the first episode was readily accepted by CBS. Others who had auditioned for the part included Raymond Burr, Richard Boone, Denver Pyle, and William Conrad. All would go on to other
Gunsmoke versions of the same pilot episode titled "Mark Dillon Goes to Gouge Eye" are in the archives with two different actors, Rye Billsbury and Howard Culver, playing Marshal "Mark" Dillon as the lead, not yet played by Conrad. Conrad was one of the last actors to audition for the role of Marshal Dillon. With a resonantly powerful and distinctive voice, Conrad was already one of radio's busiest actors. Though Meston championed him, Macdonnell thought Conrad might be overexposed. During his audition, however, Conrad won over Macdonnell after reading only a few lines. Dillon, as portrayed by Conrad, was a lonely,