i strongly disagree with many of the other review of this film . it be a very faithful adaptation ( give hollywood history of adapt for the screen ) and and one of my favorite movie . it be not entirely faithful and i. e. operation bareback ( which i would have enjoy ) be forgone and probably due to the mass nudity that it would entail . the love interest and the storyline and the character be very close to the novel . some criticize it a a ripoff of the invasion of the body snatcher and but the novel actually pre date that work and so who copy from whom . the scope of the movie be scale back and little mention be make of landing and conflict in other country and but this may be due to edit exigency . the alien be suitably creepy a my wife will agree and a she still refuse to watch it again and and it manage without the gore of many similar movie and although it be rather violent . compare to another recent heinlein adaptation and starship trooper and this film be much truer to the author original work and be a thrilling and thoughtful treat . sadly and it look like no sequel will be forthcoming to carry the battle to the moon of saturn .