Over all, this book was really great, don't get me wrong about that, and I will definitely read it again at some point in the future once I'm finished with the series. But it started off at an 'oh my GOD' level of awesome, with the ship crashing and working out how Tarver and Lilac were going to survive, deciding to get to the wreckage, and all the expected angst. Although the characters were 17 and 20, so you would have to expect some of the usual teenage inner monologue, I actually felt like this was one of the best YA/NA books I've ever read in terms of the characters not getting in the way of themselves, or decending into whinging annoyingness. I feel like Tarver and Lilac handled themselves pretty well considering the circumstances, while staying true to their characters. 
 But somewhere between (view spoiler)[ Tarver recovering from an infection (hide spoiler)] and the end of the book... I'm still not quite sure if it just lost me, or the story lost momentum. Whatever happened, the result was the same in that the end left me feeling a little deflated. The ending was definitely original, I'll give it that, but it almost felt like it was in a completely different tone to the first half of the book. It also felt a little rushed, like the build up kept increasing and then the end just happened in a blur that stopped a little suddenly. Nevertheless, this is still by far the best book I have read in over a year, and I truly wish there more sci-fi books like this on my bookshelf. 
 From a technical side I thought the writing was flawless, easy to read, paced wonderfully, keeping me immersed, and thankfully, my pesky internal editor switched off. I can't wait to read the rest of the books in this series.