I confess, I already know a good bit about forensic sciences, so I skipped the history and the science and jumped right into the cold cases.  While the cases were interesting, the delivery wasn't all that great.  At some points it felt like I was reading a term paper; in other places it read like a preachy old man. 

Overall, an interesting book, particularly if you're interested in the science and history of forensics and DNA in criminal investigations.