Star Trek Mirror Universe: Obsidian Alliances Book

This is really three stories that are related by which universe they take place in. I've always found the mirror universe stories to be rather fascinating, as they give us a glimpse of parts of the characters we've grown to love that are not at the forefront, or suppressed. The first one was Voyager, without it, which worked well enough, with enough action to keep me reading. The second story I treated as a stand-alone, until I got the climax and got enough context to place it. The last one was Deep Space 9, and it hooked in brilliantly with the mirror universe arc that was explored in the show itself.