base on the book space vampire by colin wilson . this be ( in my humble opinion ) one of the best piece of sci fi horror to come out of the eighty . the effect ( do by ilm ) still hold up by today standard . the actor be mostly british and be british seem to give this film a great depth of realism . the film be pan by the critic and sadly fail to do well at the box office on both side of the atlantic . tobe hooper blame the promotional work that be do before it release a the main cause for it low taking . but for whatever reason and it still do not detract from the fact that this be an excellent film with a great cast and well paced plot . not to be over looked .