The primary objective of the work is to allow US police departments to classify serious crimes for analysis purposes. Thus, if you are expecting a "profiling" guide, you will be disappointed. If on the other hand you are content with some insights into patterns of offending and potential distinguishing features, the manual is of value. It contains operational advice to police which I am less competent to judge, although the information on interview methods is limited. Finally don't buy it as a book to plough through - it is definitely for referring rather than reading, and as such should certainly be in all police libraries.