Forensics experts often complain that television crime scene programs make it seem that murders can be solved by crime labs in a day. The third edition of Bloodstain Pattern Analysis demonstrates just how complicated the process of gathering and evaluating evidence is. Bevel and Gardner, both experts in the field, explain how to recognize the various types of bloodstains, on walls, floor, clothes and objects. They, along with other experts, discuss how to decide the point of origin of the wounding, give a synopsis of the circulatory system and clotting times. They also provide guidelines for documentation of the crime scene and providing accurate information to the justice system. A chapter on safety for the investigator who might be dealing with HIV-infected blood is extremely important. The book is intended for professionals in the field with mathematical formulae, charts and photos not for the squeamish. It is also well referenced for those who wish to make a more in depth study. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)