Oona Out of Order

Took a while to get to what seemed like the actual plot of the book, but then it got interesting. Unfortunately, it ended not too long after that, just as it was growing on me. The logic of the time travel was particularly hard to grasp, so I gave up trying to understand it and let go of my hope that we'd get an explanation for why Oona was subjected to it. Once I did that, it was entertaining.