It has been days since Mariela has been held in a government facility and she is no closer to convincing them that she is possessed by a demon from below. Dr. Clyde, a xenoarchaeologist, is convinced that Mariela is being infiltrated by an extraterrestrial from above. The truth: they're both right.
部分情节的发展较为平淡无奇，但整体上并不影响观影感受。
观影全程如坐针毡，冗长拖沓、乏味剧情，加上糟糕视觉听觉呈现，既无娱乐价值，更谈不上艺术熏陶。
可惜角色塑造流于表面，过于脸谱化，好人一味善良、坏人纯然邪恶，缺失深度挖掘，难以给人留下深刻印象。
情节老套是这部影片硬伤，观影不久便能猜中后续走向，如同嚼蜡般缺乏惊喜，难以勾起深入探究欲望。
特效制作水平低下，画面模糊不清，严重影响了观影体验。