Preserver is the last book in the mirror universe trilogy, and I'm sorry, they should have ended the trilogy at the first book. I did not enjoy Books 2 and 3.
The best part was the opening storyline, as our heroes try to rush to the Preserver base. Our heroes are going, to stop him. Captain Picard has a space battle and chase sequence, while Kirk and Evil Kirk try to kill each other in zero gravity. When all the excitement is over and done with, our heroes are shocked to discover that the only thing left at the base is an obelisk.
The next third of the book was hard to read. It tries to bring together all sorts of Star Trek episodes I haven't seen, in order to weave a big narrative about the Preservers and secret societies in Starfleet. The Preservers, it seems, are secretly behind everything that ever happened on the TV show. They even hacked the military computers, so Kirk would be promoted to Captain. This part of the book goes on and on and on, and it bored me to tears. The only part I liked was when they said the Preservers copy/pasted Planet Earth several dozen times when they created the universe. That's why all the aliens on Star Trek look and act just like humans. That's a cute explanation.
There are two psycho-historians in this section. You know the saying "those who forget the past are doomed to repeat it"? Well, these people take that saying seriously. They think they can predict the future, by studying the past. After carefully analyzing their data, the psycho-historians have determined that the universe is going to end in about two weeks, but they don't know why or how. For geniuses, they're pretty incompetent.
The psycho-historians kidnap Picard for dumb reasons, which creates a little bit of tension in this otherwise dull section. Then, our heroes make a dumb plan. The Preservers stopped Evil Kirk from taking over the universe once, right? So if we let Evil Kirk take over the universe again, maybe the Preservers will show up a second time!
So they let Evil Kirk start a plan to destroy the universe, which involves Planet Halkan. The Ferengi have built a huge space station there, and they're about to start an experiment. Picard realizes that their experiment will create a second Big Bang and destroy the universe! The mirror universe, that is. Our universe will be totally okay. That was a good twist, but it felt a little like a cop-out ending, considering that we have 150 pages of experts going over every detail of the situation.
Picard tries to stop the Ferengi, but he's hindered by another spaceship, run by Captain Christine MacDonald. She is hostile, because she thinks Picard is trying to ruin her mission. A big showdown ensues, and there's a three-way fight where Picard is forced to destroy both the Ferengi and MacDonald.
Meanwhile, Kirk and Evil Kirk jump to the mirror universe and meet the Preservers, who don't have any dialogue. The entire thing is written like a drug trip; Kirk suddenly understands everything, and he decides to go home. Oh, and he saves Evil Kirk along the way, because Captain Kirk is just that wonderful. Evil Kirk is so inspired, he decides to become less evil, in order to find true love. (I am NOT joking.)
The book ends with Kirk's wife dying, and a cliffhanger for the next trilogy, where Kirk's alien son does things. I'm not going to read that trilogy. Like I said at the start of this blog post, I didn't like this book. It's long and deeply entrenched in episodes I haven't seen/don't remember. The entire book builds up to the revelation of the Preservers, and we don't even get to see them. I'm glad it's over, so I never have to worry about this trilogy again.