Preston Diamond is thirteen years old, but he isn't a kid anymore. He is a hunter. The last of the Diamond line is on the trail of treasonous killers responsible for the brutal murders of his parents, Constantina and Colonel Cutler Diamond. The traitors are hunting too, for Preston's death is tantamount to their survival. There is one person he can confide in, but, in the midst of a bloody civil war, how does a young lad find audience with Lieutenant General Ulysses S. Grant?