A scientist’s thoughts materialize as an army of invisible brain-shaped monsters (complete with spinal-cord tails!) who terrorize an American military base in this nightmarish chiller, directed by Arthur Crabtree.
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Plays out more like horror-mystery for which we wait to see who or what is behind the strange incidents in the story, but its gory climax is quite memorable to watch with its "brainy" special effects that continues to thrill audiences today (whether it's hokey or not).
Like many low budget horror films of the era, the first two acts are pretty boring and insubstantial. When many of those films finally revealed the monster, however, it was laughably goofy and anticlimactic. The monsters in this one, though, are like Ray Harryhausen-meets-David Lynch and the spectacle of their violent destruction is worth the wait.
"An invisible threat" opens a lot of allegorical avenues, and this one makes sure to really state what the concern is (nuclear power), but so much of its admittedly short run time is a drag. I did like the satellite precursor to the "enhance!" phenomenon - this machine even lets you know when you're approaching the danger zone
This movie has it all: radiation plants, the mad professor, Russians, thought materialization and vampirism.
Besides, this movies wins the spectator over with superb fallacy and almost enchanting visual effects.
It's hilarious. Watch it.