Encyclopedic, useful, comprehensive. And still not recommended for the casual reader.
Trust me, read a couple of these things and you will never complain about how unrealistic the portrayals of crime scenes and the aftermath of violence in the movies are again.
The real world is so much ickier.
And eight or nine pints of blood is a remarkable quantity, when it's sprayed all over somebody's living room. And there is no glamor in cop work, but I am really glad that there are people who are willing to do it.