* "Raises the ante in unexpected ways until the very last page."--"Publishers Weekly", starred review
* "This is a beautiful blend of science fiction, medical thriller, and teen-relationship novel that melds into a seamless whole that will please fans of all three genres."--"School Library Journal", starred review
* "Outstanding examination of identity, science and ethics."--"Kirkus Reviews", starred review
"Readers will respond eagerly to this provocative novel."--"Kirkus Reviews", Sci-Fi/Fantasy Special
"What will hold readers most are the moral issues of betrayal, loyalty, sacrifice, and survival."--"Booklist"
"Fascinating and thought provoking."--"Kliatt"
"This novel is truly unlike any other I have ever read and is a breath of fresh air in the often predictable world of teen literature."--"ELLEgirl"
"This is an amazingly powerful, thought-provoking, just brilliant novel."--"Teen Book Review"
"An extraordinarily fine novel."--"VOYA"
"Gut-punch plot twists."--"The Seattle Times"