Silver lives with her cruel aunt in her family's ancestral home, Tanglewreck. Forced to clean and never having enough to eat, Silver only has the house for company. But one day her aunt takes her to London to visit Abel Darkwater, a man Silver doesn't trust, a man who wants very badly for Silver to find for him a clock called the Timekeeper that her father owned. With the help of Gabriel, a boy who lives underground, Silver embarks on a journey to escape Abel Darkwater, find the Timekeeper, and discover the other side of the universe.
Gabriel is the highlight of the book, for me. I love his big ears, his short statue, and his archaic speech. He's the perfect companion for Silver; he always looks out for her, despite knowing even less than she does about how the world works, and the little things he does show how much he cares about her. Micah, similarly, steps in as a father-figure for both Gabriel and Silver, and his strength and quiet wisdom are just as important as Silver's power or Gabriel's skill.
Several things annoyed me about the book. Although it is a good introduction to the principles of quantum physics, the book completely forgets what little story it had in order to introduce these principles. Each chapter, particularly in the latter half of the book, has a title warning the reader what it will be introducing next: The Einstein Line, A Black Hole, Spooky Action at a Distance. If the book had picked one or two concepts (such as, for instance, what was probably the original concept of the Timekeeper) and stuck with it, all the physics wouldn't feel so random. As it was, for the amount of time spent introducing issues such as Schrodinger's cat, most of them had very little relevance to the rest of the story.
And the physics isn't even introduced until the latter part of the book. To get there, the story meanders through a halfhearted sympathy-grab by describing Silver's horrible living conditions. Orphaned child raised by horrible relatives? It's not a new idea by any means, and Tanglewreck lacks even the basic grounding that would make it believable within the context of the story. Silver never really thinks over her situation or how she feels about it, and the best time to remember it, near the end of the book, only brings a vague mention of her trouble.
I also had a great deal of trouble accepting the book's conclusion. It merrily discounts such things as God because that's not science, then proceeds to have love conquer gravity, honor conquer self-preservation, and good conquer evil. That's not science either. Also it made absolutely no sense how something like the Timekeeper, which was nothing more than a clock built by human hands in the thirteenth century, could somehow regulate the lifespan of the universe (and where was this when the universe began?) and could not be destroyed by any means. By all means, have a clock that regulates some critical function of the world as part of the story---but don't expect me to believe said clock was built by mere mortals in the middle of human history. By all means, build the clock---but everything made can be unmade. Parts break, paper rots, diamond collapses into graphite. Perhaps there is a nonphysical structure that the clock only represents, but this is never said, and can only be construed as an attempt to understand the gaping holes in the book's logic.
Finally, my personal pet peeve was that Tanglewreck, the amazing, nearly sentient house from which the book takes its name, hardly features at all in the story. It felt like there was so much more to tell about the house and the family that lived there, but the book ignored it in favor of a poorly-disguised physics lesson.
Overall, I've read many better books introducing facets of quantum physics, and even more books that manage to pull off a cohesive storyline. Silver is a very flat protagonist that doesn't have much of a personality, especially when set against Gabriel, who does have the emotions and quirks that make him human. I rate this book Not Recommended.