What is Brielle's job title if she works as a third-party agent conducting lie detector tests?

In the context of conducting lie detector tests, the most appropriate job title for someone acting as a third-party agent is "Polygraph administrator." This title implies a role that involves overseeing the administration of polygraph tests, ensuring that procedures are followed properly, and that the results are interpreted accurately. A polygraph administrator typically has the training and credentials to manage the technical and ethical aspects of administering polygraph examinations.

The term "polygraph examiner," while closely related, commonly refers to a person who directly conducts the tests and interprets the results, rather than someone in a broader administrative capacity. Meanwhile, "forensic analyst" generally pertains to individuals involved in examining physical evidence in criminal investigations, which does not specifically connect to lie detection technology. Lastly, a "criminal investigator" encompasses a wider range of duties related to criminal investigations but does not specifically focus on the administration of lie detector tests. Thus, the role of polygraph administrator is the best fit for Brielle's responsibilities in this context.