74 Private Security and the Investigative Process, Third Edition
c . e x p e r T wI T n e s s e s
The role of expert witnesses in the investigative process is unquestionably signicant. Experts scru-
tinize evidence, perform a quality control function, and provide insights into cases that are under
investigation. Just as the courts have increasingly relied on expert testimony as a form of explana-
tion and understanding, so too does the security industry in the assessment of cases. “If scientic,
technical, or other specialized knowledge will assist the trier of fact to understand the evidence or
to determine a fact in issue, a witness qualied as an expert may testify thereto in the form of an
opinion or otherwise.”
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“An expert witness ...