![](https://image.tmdb.org/t/p/original/j7Fnop95s0OLDv0Ma1vrXmv7jsb.jpg)
![](https://image.tmdb.org/t/p/w200/hjH4rvDT7ZtsSSmFIrvHFor8cUp.jpg)
In attempting to develop a chemical which would make a person super-intelligent, Dr. Montrose fails and the subjects of his experiments metamorphose into hideous monsters who band together and prey on humans. With the police stymied, a young detective attempts to track down the leader of the group of killers, known only to have a small crimson stain in one eye.