This book is set about 150 years in the future, not too long by most standards, so it was both familiar and different. The book started a little slow, which sounds odd considering that it opened with the arrest of the central character's mother! However, after a while it was intriguing, well written and timelyl.
The book explores the question that we have dealt with in the world, mainly, what criteria need to be met in order for a person to be considered a person, a human, and not an object to be treated the same as a car, just without the value?
In this fictional world, clones are created from "real" humans, as inferior 'things' to do specific (such as cooks) and are treated like slaves. They have no rights, no property, and are created unable to lie. They also have skin colors determining what kind of role they will have, and are given numbers, not names. If damaged, they are simply destroyed.
There is another servant/slave caste as well, cyborgs. The cyborg rule comes in when a specific percentage of a damaged human is replaced with synthetic parts, such as eyes or hearts or legs. Once that plateau is reached, the 'person' is no longer human, cannot own property or deal with humans on equal basis.
Both of these are unnerving to say the least. I see the echoes of past efforts to dehumanize people of different races and homelands (Asians and Irish come to mind). I also saw the echo of the one-drop rules in the ruling that a cyborg is considered three-fifths of a person.
As the book opens with a virtual class about slaves escaping with Harriet Tubman, the reader is shocked into seeing the comparisons. Leanna, our main character, has always seen clones and cyborgs as non-human, but as the story unfolds, she begins to have a different viewpoint. The reasons are obvious to the reader, even if somewhat pedantic in tone.
This compelling story be part of the student education when slavery in U.S. and World history are discussed, as it could and should lead to discussions on the pivotal topics of slavery, enforced servitude, cloning, and the ways that people should and could benefit or receive harm, or have, from these topics.
One great thing the authors have done is include reasoning on the Clone Code to the back of the book, including historical information on figures mentioned, or who play a role, in this book. This is great information in a few pages, and that alone makes it a rock star!
I did rate it down a little because in places the story drags, but overall it is a great way to bring the subjects up without pointing fingers at current events in a way that brings shame. The secrets are not really hidden, the truths are glaring, but the story is strong enough to overcome that, and I would heartily recommend this book, and probably the series, to students from about grade 3 to grade 10, or at any point where the discussion of slavery comes up.