The purpose of this text is to guide and instruct the reader in all areas crucial to the effective presentation of evidence in criminal courtroom cases and to emphasize the importance of the part played by the proper advance preparation of reports and evidence prior to getting into the courtroom. The text clearly indicates how closely an officer's credibility is tied to his or her investigative report. The book thoroughly examines the various problems of evidence holding that often arise during the time between arrest and trial, and the steps that can be taken to ensure a smooth flowing presentation during the trial. The text discusses and instructs in great detail on the many facets of direct-examination and also takes the reader into the world which the officer-witness dreads most, that of cross-examination. Through sample testimony, the officer is instructed in how to recognize and understand the defense strategies employed in each of many different situations as well as in how to turn attacks by a defense attorney to the officer's own benefit. Many practical question-and-answer courtroom scenarios are provided as examples. In addition to direct- and cross-examination, other major sections of the book include the complete trial process, report writing, the pre-trial process, and the use of exhibits. Whether used as a reference or a textbook, this text will provide the police officer with the necessary tools to develop confidence, ability, and control in presenting courtroom testimony.