Nothing short of a masterpiece After three viewings during which I discover something new I've missed every time, I can say that there is so very much to look at and understand here. There are some major deviations from the book, which is a highly original piece of writing but I'm not quibbling about that as I enjoy both film and book. The overriding message is that human life is worth nothing more to the aliens than insects lives are to humans. They have come here to harvest human skin and they work diligently and relentlessly at their task ignoring any emotional plight their actions cause. Things go wonky when our protagonist ( who remains nameless throughout) decides to find out what it's like to be human. There are so many interesting and intelligent nuances and subtle observations along the way which have wider meaning., so many wonderful studies of the human condition as seen through the eyes of an ET. The brutality of the actions of both us and them are shocking at times but everything resonates. The candid portrayal of Glaswegians is a bonus and the stunning cinematography of the Scottish highlands just adds further plus points. I could rave on forever , read the other 10 star reviews for more interesting takes on what's happening here. If you love film, science fiction and Scarlet Johansson in the pink, you can't go wrong.