Zero Sum Game
Star Trek: The Next Generation: Typhon Pact #1: Zero Sum Game (Star Trek: Typhon Pact) by David Mack
From the best to the worst, every Trek novel I've read takes you farther on and further in. They paint pictures and set scenes that would never show up in an hour-long show, or even a feature length movie. And they can create new ideas of their own.
This book takes you to an asteroid belt shipyard, revisits old characters, brings you along with a new crew. But there's more than just a new paint job on an old ship.
I particularly like how it "explains" the Breen - not as a single secretive race, but as a social construct. They are a people who have adopted a culture of equality (or is it enforced uniformity?), all members cloaked in the same appearance, though from different species. No one language, but all using vocoders to speak in the same computer inter-language. That notion alone is worth the price of admission - and it was here, in a Trek novel. Not bad.