Actually, it was more in depth than I was expecting, though still accessible to the layman, I think. I liked best reading the anecdotes from various professionals, as of course I either knew or had an idea of the theory anyway. Still, it did more than gloss over techniques, going into a bit of detail about PCR, STRs and so on, and different reagents for lifting fingerprints, etc. A good reference book even for those in the field to a lesser extent, like me. I still haven't decided yet whether to pursue my Masters in forensic science instead of biomedical science, but we'll see!
It didn't read like a textbook to me, more like a basic introduction for the layman to learn some of the information concerned with the field. If you're looking for something comprehensive, this isn't it. There aren't any useful pictures either, just stock photos of fingerprints, magnifying glasses, and the usual. It was a nice quick read for me, to recap some basic stuff. Basically, for me, the anecdotes made the book. You learn in here about the principles of techniques, but less detail of the information, e.g. about using insects to identify time of death and so on, but not details about species, time periods of their life cycles, etc.