As someone who reads a lot of science fiction, I was very impressed with how different this novel was from other "alien invasion" type stories. The authors did an excellent job on getting inside the minds of a truly alien species. Highly recommend.
A very good book about alien invasion, politicks, love, and the thoughts of all.
I lost my home in the Almeda Fire in Southern Oregon and in it was my copy of Footfall that I enjoyed. I now have another copy that I have so far re-read again.