Not by sight

Once I picked this up, I did not stop to sleep until it was done! There is incredible suspense in this, and there's no way to know who to trust. There were lots of lines to keep up with–Grace's missing brother, Jack's career, her father's likely treason, the girls on the work farm...and I doubt I'd have had such a rich reading experience if I hadn't read it all in one glorious gulp. As it was I noticed the poetry of moments like when she's learning how to describe scenery properly, or felt the significance of someone's headache on a dance night, or caught the little ironic hints from Dr. Strum, who obviously knows more about Jack's actions than he lets on, or the nuances of what's happening with Jack's imperiled inheritance. It's a spy story at its best, and there were so many twists that it kept me guessing to the very end. The plot even reminded me of one of my favorite spy-story writers from that very era, E. Phillips Oppenheim.