The New Adventures of Sherlock Holmes - Episode 17 - The Case of the American Cowboy
Summary
Sherlock Holmes and Dr. Watson visit "Buffalo Bill's Wild West Show", which is on a big tour through the Empire. During the show, however, one of the Performers, who was acting as Ghost Dog, Chief of the Lakota tribe, mysteriously falls from his horse and succumbs to his injuries. Colonel William F. Cody instructs Holmes to investigate the incident.