Although murderers abound in modern literature, assassins of famous people are a little harder to come by. The parents of those assassins are even more scarce, which is where Hawley's book holds its interest.
It is fiction, but it leans heavily on existing characters, presenting short biographies of famous killers, such as Timothy Mc Veigh and John Hinckley. These add depth to the already thought-provoking subject of 'good parenthood'.
Despite the first-person treatment, Hawley has the point of view jump around between the characters, which is a bit confusing, albeit ambitious.
Ambitious also is the recurring metaphor comparing detective work (Did He Do It? Arguably, the book would have been better off without the whodunit.) with medicine.
Altogether : OK writing, but not much more than that.