Back in the 1990's I found a used book called "The Eighth Day". At least I think that was the title. I think it was written in the 1970's.
I MAY HAVE THE TITLE WRONG. So read my summary.
In the book there is this small town that visitors move into. It turns out that within the town are two new species of humans that will replace the human race (according to the story).
One species are super intelligent albinos (who are recluses) and the others (who are discovered near the end) are the rest of the people in the town who appear normal but all have exactly the same IQ and are a telepathically-linked hive mind.
The collective hive frames the albinos with various crimes, making them seem sinister. They also murder some of the albinos.
I have never been able to find a trace of this book anywhere and I can't remember the name of the author.
Has anyone heard of it?