This course presents a type of interview that is used in eliminating innocent parties when there is a large pool of potential subjects. It describes an interview that utilizes structured questions to elicit verbal and non-verbal responses in order to help assess the culpability of the person being interviewed and either eliminate them from suspicion or keep them in the subject pool. Also discussed will be additional uses of Subject Elimination Interview (SEI) questions. When interviewing a single subject in a case, the interviewer could use a series of SEI questions to test whether they feel the subject is being honest with their responses, therefore allowing the interviewer to either continue the interview or terminate the interview for further investigating.