Who is the narrator of the novel?

The narrator is the author. He is a close friend of Nasar and in this he retells the events that led to Nasar's death. In the end it is not told if Nasar was the killer, but he provides detail of every little thing and while he believes Nasar is not the one at fault, the details that slowly unravel the tale lead to a very interesting book and story. In the end, we understand how no one did anything to save his life, yet others feel the guilt of Nasar all around the town and it cannot be washed away no matter how hard anyone scrubs.