* “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
