与其说科幻片不如说是惊悚恐怖片 - 而且口味还有点重。个人感觉影片前段太偏重制造悬疑噱头了，最后却没能很好的自圆其说，观众期待的被醍醐灌顶的故事高潮始终没有到来。单就这点我认为故事叙述和逻辑营造都不太具备说服力。而片中几处插叙倒叙段落出现的节点显得既尴尬怪异又冗长 - 导演的意图或许是想用于塑造人物性格背景，但起到的辅助作用微乎其微。这也是造成影片节奏拖沓的原因之一。
It's more of a horror movie than a sci-fi one. Personally I think it spent way too much effort on building up suspense most of the time yet in the end I didn't feel it was capable of justifying itself - the long-awaited revelation of the story never came. With this, I consider neither the story telling nor philosophy has been executed convincingly. Those interposed and flashback sections seemed strange and awkward - they may be wanted for shaping personae's characters and background but the effect seemed only marginal... somehow they slowed down the tempo and turn this into a long-winded movie.
This movie is not for kids and, if you don't like to be scared, skip it.