Ark
Cover scans
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Hi-res cover scans
Synopsis
Ark picks up where Flood left off. Unfortunately, the cover art sort of gives the ending of Flood away (although it's not that much of a spoiler, really). It follows the exploits of the survivors of the world wide flood, both on Earth and on the spaceship.
Review
Like the previous book, this one is excellent. It's thick, and uses the space well to flesh out the characters and describe the drama. If you liked Flood, then you'll like the sequel. The ending was particularly satisfying.