On May 23, 1961, Barcroft played Doc Longley in the episode "Badge of the Outsider" on NBC's Laramie western series. Longley is an aging outlaw who wants to live his last years in peace in his hometown of Laramie, Wyoming. A gang member frames Longley for the murder of the deputy sheriff in Laramie. Longley claims most of the wanted posters seeking him are based on falsehood, and he asks series character Slim Sherman (John Smith) for help. Then he claims harm will come to Slim's partner, Jess Harper (Robert Fuller), if Slim refuses to comply. Longley surrenders to authorities, but a judge claims Longley must "prove his innocence" in the case. Longley's gang springs him from jail when the hearing goes against him, but the gang is interested in Longley's money, not Longley's own fate. Paul Fix also appears in this episode.