Okay, on with it. Susie Salmon is a teenage girl who is murdered (not a spoiler). She narrates the book as a ghost, following the investigation into her murder as well as her family's lives after her death. The book isn't really a whodunnit, as Susie reveals the details of her murder (including the murderer) right away. The book is more about how both she and her family deal with the aftermath of her murder.
I felt like the book started with a lot of momentum but slowed significantly closer to the second half of the story. At first, Sebold focuses on the investigation, and we're still learning who all the characters are. The second half, however, is more about how everyone's lives progress, as Susie's murder investigation slowly fades from its initial prominence.
One thing I like about this book is that we get glimpses of Susie's heaven...what it's like, the people she meets there, and how she watches her family and friends on earth. Sebold's idea of heaven is an interesting one and I enjoyed reading about it.
Just some random information about the book...it was written in 2002 and made into a movie in 2010. The book, I'd recommend. From what I hear about the movie...Peter Jackson should stick to elves and hobbits. But if you're interested, here's the trailer...The Lovely Bones Movie Trailer