Unfortunately this book was quite disappointing. All characters just accept their fate and that's it.
Also, why are there several donations? If those clones are made for organ harvesting anyway, why not harvest all organs at once, instead of nursing every clone to health each half a year and then cut them open again?
Another thing that bothered me was, that till the end I hoped to have an explanation about what kind of organs were taken out at what order. My assumption for the first one was one kidney, but after that....half a liver? And then, what other organs can one donate and still survive 3 donation surgeries and still be able to walk around and take car trips?