Curse of the Undead

Curse of the Undead is a 1959 American vampireWestern film directed by Edward Dein and starring Eric Fleming, Michael Pate, Kathleen Crowley, John Hoyt, Bruce Gordon, and Jimmy Murphy.

Returning to his ranch along with Dolores, Doc Carter finds his son Tim Jimmy Murphy extremely upset after the actions of their neighbor Buffer, who has been doing everything possible to get his hands on the Carter property, including damming a stream on the Carter ranch and having his men assault anyone who complains. To restrain his hotheaded son, the Doc drives back into town to have a word with the local sheriff Edward Binns. The Sheriffs discussion with Buffer Bruce Gordon in the local saloon proves less than successful, however, and a blackclad stranger Michael Pate follows Doc Carters buckboard. By the time he gets home, the Doc is dead, his throat bloody...Already griefstricken over the loss of his father, Tim snaps after learning that a fence has been torn down and cattle are escaping. Convinced Buffer is responsible, Tim plies himself with booze and then goes after Buffer in the saloon unfortunately Buffer is a much better shot, and Tim is killed. ........

Source: Wikipedia