This is my 3rd attempt to read this book - once in my late teens, once in my mid-twenties, and now in my mid-thirties. I could never get into it, but it had such great reviews that I kept coming back to it. Turns out, I just wasn't ready for it. Now that I am, I would highly recommend it! 
It's such a lovely example of the power of folklore and family, history and identity. 
Is the mystery portion perfect - no. There weren't too many things that actually surprised me, but honestly, I feel like the mystery is secondary to everything else going on in the story.