Shanklin Bonanza : Season 13 Episode 20

A band of rogue ex-Confederate soldiers comes to the Ponderosa to demand a $25,000 ransom. Hoss tries to disrupt the robbery and is critically wounded by the group's leader, Shanklin. While Jamie escapes and tries to search Virginia City's saloons for Joe, Ben learns that Shanklin is an outstanding surgeon and demands that since he wounded him, he can perform the surgery to save Hoss' life.