This was the perfect end to this series. I'd wondered why they got their books in the order they did, but there's no way that Mia's book could have been the first one.
I still want to know how NR gets so many different story lines. This makes my eight book by her (not including the one's she's written as J.D. Robb) and they always draw me in. All of them have friendship as an important part of the storyline, most of them long term friendships (Vision in White, Bed of Roses, Savor the Moment, Savor the Moment, Blood Brothers). The first two books in this trilogy (Dance Upon The Air & Heaven and Earth) have one broken long term friendship (between Ripley and Mia) and a budding friendship between Mia, Ripley and Nell (mostly in the first book, when Nell is new to the island).
There were parts in this book were I really didn't want Sam and Mia to get together (aside from the whole island falling into the sea thing), I though he'd hurt her too badly, that she'd never be able to forgive him. But they'd both been little more than children and I understood why even if I didn't really agree with it (what is with men not being able to talk about their feelings, ever?)