This book, without a doubt, and is one of the most well written ST books ever, definitely the best of the DS9 relaunch series so far.
Prior to reading Twilight, I hadn't read any of the relaunch series so far, but this book is written so clearly that I immediately picked up on all the small details of the plot.
Set 6 months after the end of the Dominion War, DS9 is recovering from the conflict that changed the face of the galaxy, and the new crew are settling into their positions.
The plot follows two very ineteresting lines. First is the Defiant's mission into the Gamma Quadrant, a strictly exploratory mission sanctioned by Odo himself. The second plot line revolves around Bajor joining the Federation, and it's obvious that something very big is beginning there.
The book proceeds at a slow but steady pace, rich in descriptive detail and the finer points of trek lore, yet both are inserted so subtlely into the plot that the reader simply accepts these extra details as part of the literary experience.
While the book doesn't resolve all the issues presented in it by the end, it does show the respective parties making progress with these issues, such as the Vaughn/Prynn relationship or Quark/Ro relationship. Neither reach an obvious conclusion by the end of the book, but it is obvious that progress has been made, and ultimately the reader is left satisfied and eager to read the next volume.
My one critcism of the book is that it is a touch slow in parts, especially some of the parts that involve Kasidy on Bajor, or Vaughn/Akaar's dinner, which is why I gave this book 4 stars and not 5. I'm all one for rich detail, but these scenes dragged on a little too much for my liking.
One much smaller criticism of the book is on a technical level, regarding a character from the series, Admiral Ross. Ross was Sisko's immediate superior and one of the key decision makers during the Dominion War, and although it was never confirmed, many people say that he was the Bajoran Sector Commander. Either way, Ross was an important official, and to not have him somehow involved with Bajor's joining the Federation simply doesn't sit right with me.
But overall, the book is a great story, and is well worth purchasing.