Black Killer is a 1971 Italian Spaghetti Western film directed by Carlo Croccolo and starring Klaus Kinski.

He discovers that the judge co-operates with the wanted O'Hara brothers, who make farmers sign over their land deeds and then kill them.

He seems willing to follow the advice of Ramon O'Hara (who owns the saloon) to leave in the morning, but Webb visits his hotel room to suggest a plan.

In the morning after the gang’s celebration at the saloon one of the malefactors is killed by gunshots from Burt and by an arrow from Sarah.

Outside Sarah picks off the men with a rifle, until the remaining gang members run away, leaving Miguel O'Hara.

When the offer is refused he takes a gun from his drawer but is disarmed by Webb and forced to sign several papers.

Burt arrives into town with the bodies of the O'Haras and offers Ramon a choice between the gun and jail.

In his investigation of narrative structures in Spaghetti Western films, Fridlund writes that Black Killer displays many typical properties of a so-called "low-end" genre production.

As another low-end characteristic, the scenes with the O’Haras were re-used in another film, Bounty Hunter in Trinity.

However, by chance or by design, the story line does offer a subtle play on several variants of the partnership plot that was used in many Spaghetti Westerns following the success of For a Few Dollars More.