While sailing along the Georgia coast, a widower (Frank Mayo) not quite over the untimely death of his wife anchors off a small inlet in search of fresh water. There he finds a dilapidated mansion, a beautiful Southern belle (Virginia Valli), her terror-stricken grandfather (Nigel de Brulier) and a homicidal maniac (Charles A. Post) who won't let anyone leave the mainland alive. Fear and desires run deep in this steamy melodrama from di