Anyone who read the Milleu Triology will agree with me that this book is a definetely MUST. I have started reading this Saga because I enjoyed the Triology so much, and I hoped for a continuation of Marc's story.
This book is the culmination of the set, and we get to see Marc making a decision once more to interfere, except this time he fights for salvation instead of damnation. This is where the development of the greatest Saint of the Gallactic Milleu occurs (greater than the Saint Illuso and Saint Jack, his brother), a moral creation of Unifex, as we see him in the Triology.
Once again we see a well-developed plot, with threads that reach to both of the sets. The best part about this book is all the vague references to the future so taht reader has to make their own conclusions.
If you have read any of the other books, this is a definite must-read. You can't go wrong with it!