Machete (1958)

"Murder and Manhunt in the Caribbean Jungle Lands!"

The opportunistic Jean marries an older man, plantation owner Don Luis, for financial security and finds herself falling for his virile right-hand man, Carlos. Jealous of Carlos' position and fearing that Jean will inherit Luis' money, his greedy cousin, Miguel, does his best to turn Luis against the would-be lovers and come out on top in the process.