There is a lot of focus on writing the investigative report and there should be since it is the primary deliverable a private investigator provides to their client. For private investigators there is not always the luxury of using a pre-formatted form for every investigation as police often do. Uniqueness of the investigation and varying types of evidence often create the need for a well written private investigative report devoid of a commonly used form.
The tried and true method is the development of case file. Case files include all information pertinent to the case investigated. It is important to remember that the case file is for use "by others", not just the investigator.
Listen to this podcast on the "Basics of Case File Construction". A transcript is also provided.
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