In the chapter on sex crimes in this book, the O'Haras explain how homosexuals need to be closely watched and how they have a predisposition toward negative and criminal acts. Much of this is very stereotyped.
Didn't this type of thinking go out with the last Edsel to be produced? NO, I am not glorifying alternative lifestyles, but the O'Haras seem to be wanting more attention paid to them by law enforcement than is realistic.
If we followed the anti-gay fervor of this book, then we would be dedicating more police hours to the "homosexual problem" than is economically feasible.
If the O'Haras had fixated upon stereotypes of Roman Catholics or African-Americans instead of gays, this book would disappear off the shelves forever.
Such material does not belong in a good police investigations manual today. Child sex abuse, crack dealing, murder, and arson belong there, but too much time is spent on social problems and lifestyles.

The Fundamentals of Criminal Investigation by Charles E.O'Hara provides a particuarly informative and comprehensive insight into the specific areas of criminal investigation. The author includes detailed explanations and supports his theories with the use of factual information and case studies. As I am currently studying law, I have been searching for a text which provides me with detailed information and everything I need to know. This book certainly has it all. This is must-have for those studying criminal investigation.