The introductory chapter addresses (1) the importance of knowing how to attack scientific testimony, (2) basic decisions relating to an attack on scientific evidence, (3) the importance of preparing for the attack, and (4) the necessity for a coordinated attack. Following a discussion of admissibility attacks in general, attention is given to admissibility attacks on testimony by the chain-of-custody witnesses, the teaching expert witness, the reporting expert witness, and the interpreting expert witness. In each of these chapters, various attack strategies are identified and described. After a chapter on weight attacks in general, subsequent chapters give instruction in weight attacks on (1) the scientist, (2) the theory or technique, (3) the facts or data analyzed, (4) the manner in which the scientist applied the theory or technique to the data in the instant case, and (5) the opposing scientist's opinion. Attacks under each of the aforementioned categories are classified and individually described. Chapter footnotes and a subject index are provided.