Wow, this one was exciting! It seems the action is building up towards a resolution, though that happened in a few of the others in this seriel, too.
As always, I find the unique approach to time and space travel in this book intriguing and consistent. Not so much hopping around this time, at least not the mundane kind.
Lots of Brand, who I believe was introduced in the last one? The dynamics of a friend/enemy across time are very well done. Reminded me a bit of the Doctor Who season that started with the Astronaut in the U.S. "Hello sweety," and all that.
I think the author does a great job balancing the idea that the past has already happened while still keeping the future past a surprise.
Overall, a good addition to the seriel. If you like stories that feature time travel or teleportation, this is the best of both, and you'll probably dig this one. Start from the beginning, though. These are all one big story, episodic, like watching a TV series (in print).
I received the review copy of this and the prior books in this seriel from the author.