The third and most troubled of 20th Century Fox's horror sci-fi
franchise sees a shaven-headed Ripley (Weaver) stranded on a deserted
prison planet, with only the inmate custodians, Dance's sympathetic
yet enigmatic doctor and one juicy biomechanical zenomorph to keep
things lively. Minuses are re-treading of old ground and incoherent
logic. Pluses are David Fincher's beautifully seedy vision and a
palpable sense of impending tragedy, giving the film a portent and
weight the others lack. Under-rated, but not under-valued.