I have never read a book when I ended up not liking any of the characters: Sorry, from now on there are some bits of information which will spoil it for you if you wish to read the book.
Daniel, even though it was clear he loved Iris and the little girl Ruby. I found him indecisive, weak and culturally lacking in terms of African Americans.
Iris, yes she wanted to be with Daniel, but her own weakness and inability to take control of her life I found sad. Her unhappiness at being an African American was also sad.
Hampton, lived a life of wanting to meet every one else's expectation; socially and culturally. A sad man.
As for Kate, lonely, insecure and unable in my view to love a man. She also clearly has some bitterness about African American.
I cannot say I enjoyed this novel. I found the premise interesting and at least wanted to see what happened. When i did reach the end, it was a mixture of relief and well it is over. However, to anyone, its probably worth a read, but I doubt you will enjoy it.
As for the writer Scott Spencer, I will look in the future as to what he he writes, but whether I buy it......