Narratively notable for featuring the Doctor and his companions in a comparatively minor capacity for the times, Robert Holmes' second script for the programme was an attempt at creating a "science fiction western". Clear allusions were evident to western character types as were being seen at the time in Britain on American imports like Gunsmoke. Holmes provided archetypes like "the lawman", "the deputy", "the pioneer", "the miner" and "the female businesswoman", amongst others. Indeed, the character of Milo Clancey wasn't even an allusion to a western stereotype; he was a wildcat prospector who dressed as if he'd just walked off the set of Bonanza.