This book was such a pleasant surprise. I found gentle Keegan endearing, his quest to understand humanity made him more human than a lot of humans out there. I pitied Aidan who seemed aloof and uncaring at first. I was very pleased that this book did not end on a cliffhanger, as so many books are falling prey to these days (and while I understand it’s justified because of the genre, not everyone wants to read a series). But…I do believe Auerbach could easily turn this into a series as I’m not quite ready to let these brothers go. This was well-written, with excellent characters; a truly fun and engrossing read.