Bob Cavis (Wilton Graff) says that he first heard of Ross Hyde (Baynes Barron) "up in the Johnson War. He rode with Tom Horn". The Johnson County War occurred in Wyoming from 1889-93. It involved cattlemen vs. settlers; many people were killed. Tom Horn is a western legend; he was a detective/lawman/hired gunman who by some estimates killed dozens of men during the late 1800s. He was hanged in Cheyenne, WY, in 1903 for murdering a teenage boy, who was the son of the man he was hired to kill.