From a technical point of view, this book is a great place to start for the general reader and student alike.
Whilst it lacks much of the depth of a true textbook, it does have the advantage it is concise, readable and remains clear in its approach. For the general reader it gives examples of the 'hows and whys' of the world of forensic science. I would however say that it is really only a primer for those wishing to explore the nature of forensic science in a serious manner.
My only other criticism is that perhaps some of the photographs act to distract the reader and at times the prose, appears to me at least, 'breathless' as in the style of news reports, rather than a properly paced commentary.
That said, it's a very worthwhile book and is certainly value for money.