This is not your kids type of faerie book. This book's mythology is based on the old myths of the Fae. They are not nice creatures, but dark, very dark.
I think the dialogue was interesting and smart. I said before that I liked some of the quotes, and one in particular still sticks with me:
"Duncan sighed, 'Our Dreams become smaller and more desperate as we get older. I think. The world strips more from us, until we'd trade anything just to get back what we once had.'"
That quote is something I think most adults can relate too, with opportunities coming and going, doors opening and shutting. Sometimes we wish we could go back in time to when all the opportunities were open to us.
I liked it, and I wish we'd see more books steeped in the older, dark, Irish-style faerie tales.