Re: TNG: Dark Mirror by Diane Duane Review Thread (Spoilers!)
Be aware, though, that there are two versions of the first four books; not long ago, Duane revised them to be more contemporary ... So you can choose whether you prefer the original versions complete with continuity problems or if you'd rather have the series feel more cohesive by getting the updated versions.
Word of warning: the new versions (as far as I know) are only available as ebooks, and only from Duane's site. If you buy them from anywhere else (print or ebook), only the original is available.
(I've only reread the first and third books in their updated versions; they're tweaked, but they're still the same books at heart.)
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