"Bonanza" Season 1, Episode 19, titled "The Gunman,"

In "Bonanza" Season 1, Episode 19, titled "The Gunman," which originally aired on January 28, 1960, the Cartwright family faces a situation involving a notorious gunman named Eddie Halstead. The character of Eddie Halstead is portrayed by actor Dabbs Greer.

In the episode, Halstead comes to Virginia City seeking revenge against Ben Cartwright (Lorne Greene), accusing him of ordering a posse that led to the death of his son. The Cartwrights must navigate the dangerous situation and deal with the threats posed by the vengeful gunman.