The specialization of forensic expert testimony in mental health has traditionally been precluded for counselors and dominated primarily by psychologists and psychiatrists. This chapter focuses on the applicable laws related to providing expert testimony and their impact on how counselors must prepare and present their findings in court. It outlines legal definitions and differences in deposing or discovery testimony versus trial testimony. Knowing the order and relevant issues involved at each procedural step becomes important regarding testimony preparation. A practical look at the specific skills counselors should have in order to effectively work in the forensic field is discussed next as well as specific strategies in preparing for and testifying in a courtroom. The growing need for forensic mental health evaluators plays a significant role in scientifically and methodologically providing the court with valuable knowledge in helping to render more informed decisions.