A variety of professionals conduct interviews for variety of reasons. Human resources professionals interview job applicants. Newspaper reporters interview people and celebrities. Architects interview engineers. In the law enforcement professions, interviews are a common tactic for the purpose of finding facts if the crime was committed, what law was violated, and why.
             So what is interview? We can define the word interview in many ways. The American heritage Dictionary defines interview as "A face-to-face meeting; Such a meeting for formal discussion". The Criminal and Civil Investigation Handbook by Dr. Joseph Grau defines interview as "... the questioning of individuals who possess information of official interest to the investigation and who aren't reluctant to cooperate".
             The two definitions have some differences, but two common characteristics prevail. The definitions agree that some kind of verbal communication or question-answer interaction between the participants occurs, and that the interview should take place in formal or structured setting. In addition, interviews are frequently grouped into three categories.
             Friendly interview seeks information from the witness who willingly cooperate with the interviewer. This kind of interview may seem relatively easy, but sometimes the person who wants to be interviewed might mix the relevant and irrelevant information, and be some what too talkative.
             Neutral interviews tend to produce the best information. Neutral interviews have no stake in the outcome of the inquiry. It allows the interview to proceed in a business-like manner, and the interviewer can rely on the information for accuracy and lack of prejudice.
             Hostile interview present the greater challenge. It is more difficult to gain the information you require from reluctant or unwilling witness. The interviewer need to use all the skills he possess to find out the informati
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