I'm working on the last of the Double Helix novels. I will be happy to finish this series. The first two novels weren't that bad but the story quickly lost it's way with the Carey and David offerings. I'm at the point where I just don't care about the virus anymore. I was finally able to finish the Bloodwing saga from Diane Duane. The Empty Chair was good in sections but you need to be prepared for overly wordy segments of battle planning and reflections on the loneliness of command by both Kirk and Ael. I'm not sure this one really needed 420 pages to tell the story it did.