Mechanical Hearts by Nicole Blanchard

This was the first book by Ms. Blanchard that I have read.  I am usually not able to get interested in a genre like this, but I was hooked from the beginning.  The lead character was so strong and I was rooting for her to find her sister.  I figured out the ending, and who was behind everything pretty early, but it didn't make me not want to find out what happened and how she figured everything out.  I hope that she writes another book, maybe from his point of view, or even a second in the series, so we can get an update.  Great book.