Giant of the Evil Island

NOT a sword-and-sandal film, but a costume swashbuckler where Lupus/Stevens plays Pedro, who becomes Captain of a ship when its older Captain retires and who is devoted to breaking up a lair of criminals led by one Maloch on a place called Evil Island. Pedro has TWO lovely ladies with whom he becomes intertwined: the shifty and scheming Alma and the good and true Bianca.