A husband and wife (played by Martin Kove and Mary Louise Weller) arrive on a Greek island searching for his missing sister, but encounter resistance from the local mayor, José Ferrer. They eventually locate her—Deborah Shelton—but she’s behaving oddly and is with a treasure hunter, James Earl Jones, who employs unauthorized explosives to explore a hidden cave by the sea. "Blood Tide" didn't reach American screens…

It was genuinely enjoyable, considering it’s a cheaply made, vintage horror film that falls into the occult thriller category—a type of movie I appreciate as something of a guilty pleasure. The filmmaking itself isn't particularly remarkable, but it’s adequate enough. What stood out positively was the photography; it’s quite striking given the limited resources, likely due to the beautiful settings and the fact that …