Jim, Mark and Clay discuss an early work from Director Mario Bava -1965's "Planet of the Vampires," starring Barry Sullivan, Norma Bengell, Angel Aranda, Evi Marandi and Stelio Candelli. This film, which provided some inspiration for "Alien," centers around a space crew that answers a signal from a distant planet and encounters  a deadly foe. This atmospheric classic has become a must-see on many sci-fi/horror fans' lists of favorites. Find out more on this week's episode of "Monster Attack!"