I kept meaning to read this for ages, so at last I did.
It's set in a near future world, where the human race is about to be extinct from a disease, molio. They have cross bred humans with reptiles in order to try for a cure and to keep even a part human going. The cross breeds - called Saphers - live on a compound and the humans outside either want them to have full human rights and be freed or be put down as they are abominations.
I enjoyed this story. It worked as a thriller and also made you think about "human" rights and genetics. The characters were interesting. I often forgot that some of them were Saphers and not human prisoners.