This is probably one of Timothy Zahn's best books, outside of the Star Wars books that he has written in the past, for the EU. Amazing stuff. Keeps you guessing until the end. He puts his own twist on the typical Space Mystery. Very well thought out, and brilliantly written! I give it a 9.5/10. Definitely a keeper to be read over, multiple times, in the future!
If you like the Star Wars novels you will like this book. It has the (slightly tarnished) good guys including an alien side kick trying to carry out the mission they agreed to do. The bad guys are trying to stop the good guys and continue their evil ways of corruption and illegal profit. A good read in the space opera style.
If The Icarus Hunt had not been a sci-fi book I would have sworn that I was reading an Alistair MacLean novel. MacLean novels are always suspenseful and keep you turning the pages long after your normal bed time. It is no wonder why so many were made into movies.
As such, I really enjoyed The Icarus Hunt. In this book, as in the MacLean novels, you really are kept in the dark as to who and what the characters really are. I'll have to check out some of the other Timothy Zahn novels.
This book is an excellent piece of science fiction. The characters are well developed, but the plot takes unexpected twists all the way to a surprise ending. The description of the technology has just enough details to make you feel like you know the technology without having to go into particular depth about it.