The Last Killer (1967)

After the brutal murder of his parents by landowner John Barrett's men, Ramon seeks vengeance but is gravely injured. In a twist of fate, he saves Rezza, a jaded assassin. As they recuperate together, an unlikely bond forms, with Rezza mentoring Ramon in the harsh realities of survival and the solitude that comes with being a killer. As Ramon grows into a formidable opponent for Barrett, the landowner hires Rezza to eliminate him, pitting mentor against protégé in a deadly showdown.