Greed was originally released as Treasure of the Amazon, the literal translation of its Spanish-language title. Ostensibly based on a true story, the film stars Stuart Whitman as Gringo, an aging but still virile soldier of fortune. Right now, Gringo is foraging deep into headhunter country in South America, in search of a cache of diamonds. Meanwhile, ex-Nazi Klaus (Donald Pleasance) is likewise searching for the gems, and unlike the essentially honorable Gringo, Klaus is willing to leave a few corpses in his path in pursuit of his goal. The international supporting cast includes Emilio Fernandez, Bradford Dillman, John Ireland, and Pedro Armendariz Jr. all of whom seem to have been recently graduated from the Take-The-Money-And-Run School of Dramatic Art.
by Hal Erickson synopsis