Something to keep you awake at night!
Like zombies, body snatchers are here to invade us, but they do it through our social weaknesses and our need for sleep. They are therefore not so much a physical threat, affecting us on the psychological level instead. They walk and talk as we do, or at least try to. You could recognize them if you noticed their moral rigidity and lack of emotion, but it’s subtle and not enough to act upon.
The visual effects are infinitely more elaborate than those of the original film. The performances are more authentic, although the overacting can get annoying and comes across as pretentious. Those quirks fortunately dissipate as the paranoia element intensifies. The odd character exposition proves to have been necessary when it is revealed that personality is what the invader cannot replicate.
There is little room for comedy and scenes are often barely lit because, once aware of the invasion, the main protagonists need to remain unnoticed, avoid eccentricities and sudden noises. The ambiance is deliberately depressing and gets very thick by the third act. 1978’s Invasion of the Body Snatchers is one of the best horror films to depict hopelessness in an apocalyptic context.