"In this futuristic follow-up, Pearson pries open the most haunting element of Jenna Fox's world: disembodied minds trapped in computers. Questions of human identity and nightmarish medical technology drive this riveting, thought-provoking sequel." --Suzanne Collins, author of The Hunger Games

"This is a mesmerizing story that will be greeted enthusiastically by Jenna Fox fans." --VOYA

"The ethical debates around whether science should be limited by conscience and not just ability are well integrated into a story that is equally strong as an exploration of home, identity, and the meaning of survival." --BCCB

"A gripping story that begs the question: Do you really know what lies at the genesis of your friend's biology, psyche or even their heart?" --Shelf Awareness

"The story is gripping, urgent, and highly appealing." --School Library Journal

"It is through his [Locke's] viewpoint that we experience the confusing futuristic world, the thrilling suspense of the chase, the charged emotional reunion of the friends, and the admirably complex playing out of the issues of trust, ethics, and betrayal." --Horn Book Magazine

"* A dazzling blend of science fiction, mystery, and teen friendship drama." --Publishers Weekly, starred review

"The book's timely and haunting questions will leave thoughtful readers with much to ponder." --Kirkus Reviews