'Twas an interesting read, if not a little bit scattered and I suspect, outdated. I am not convinced of its benefit in helping an aspiring writer to be able to understand how criminals work, which is, of course, the purpose, and title, of the book. But like the other books in this series, it did give some insight into matters a writer might face in the course of writing a book which features crime and criminals. I think I am done with this series for now though, I'm not sure there is a great deal left to be learned from them.