This pickes up only minutes after book one concludes. I was glad to have it on hand to finish a very suspensfull cliffhanger. This trillogy, however, seemes to suffer from 'Trillogy Syndrome'(seems many do) in that it starts with a bang, and then fizzles out in the second and third books. There's a "sneak preview" of a chapter of book three at the end of this book, and just from that little bit seems to be streching it out for all it's worth, but losing momentum.
There are some great scenes with the Klingons, in fact, I belive the best part of the book is how Dr Braums, as captain of the Klingon vessle Hos, interacts with her crew, and the heroic actions of the Klingons she serves with.
Genisis Wave also gives more detail about the horror of what they're up against.....and how they are able to launch such an incredible attack when they've hardly been heard of previously. Some conflict is also given when they show a more spiritual side of these creatures.
Also, it's important to note that the charachterising isn't really up to par, and it seems Captain Picard and Dianna Troi both have some flatness, and speak in a way that just doesn't seem to fit thier personalities. Dianna does have a very important heroic part in all this though. On a good note, Geordi is more thoroughly explored, and Data saves the day as he is the only one immune to the effect of the creatures.
Worth it to finish the trillogy, I'll be reading the next book ASAP as well. A good, albiet not great story.