Two extraterrestrial horror thrillers from B-movie maven Don Leifert. In         Alien Factor (1978, 82 mins.), towering monsters emerge from a UFO in      rural Maryland to wreak havoc. Then, in Fiend (1983, 93 mins.) a           bloodsucking vampire creature feasts on the denizens of a slumbering New       England hamlet. Both films are gems of amateur horror filmmaking--rubber       suits, stop-motion animation, and camp humor abound.                           Don Dohler---USA---1978/1983---175 mins.