This book is a gem. Frank Herbert weaves a tale of secretive humans living in a hive society beneath a rural, innocent looking farm. Note: that last sentence isn't a spoiler - the whole thing is revealed really quickly.
I've got so many good things to say about this book: the detailed structure of the hive society, the description of espionage as a heartless, lonely business and the juxtaposition of those who strive for each other and those who are essentially out for themselves.
What I liked most is that there's no real hero character and a lot of things don't get tied up at the end. Firstly - the "no hero" aspect just makes the thing that much darker - people don't miraculously escape or kill their way out of bad situations - they just die if they are in the wrong place. I won't give away the ending - but again, I think the way it turns out makes the book that much more gritty and realistic.
The most disturbing thing for me was that quite early on I found myself rooting for the hive!
If you like science fiction - this one should definitely be on your reading list.
p.s. For some reason this book reminded me of Xan
by Patrick Tilley (a book I read years ago and had forgotten). Not in the story so much but in its disregard for the hero character, or the requirement to tie off all the threads before ending.