Moro Witch Doctor (1964)

CIA agent Jefferson Stark is ordered to the Philippines to investigate the double homicide of two American plantation owners, Cameron and Kruger. Authorities believe the two were killed as a result of local gun smuggling and drug dealing. Cameron's sister Paula helps Stark in his investigation, and learns her brother is still alive and has gone into hiding from the syndicate. Stark discovers the plantation is all just a cover for the crime ring's smuggling operations. A fanatical cult leader named Datu Sumlang tries to buy the property, but when Paula refuses to sell, her brother's ex-friends start getting murdered. Stark uses Paula as a lure by telling her to meet him in Manila with a suitcase full of money. She gets attacked by the supposedly dead Kruger, and Stark comes to Paula's aid and kills him. With Kruger's death, the crime ring dissolves and her brother Cameron is exonerated.