• A civil investigation helps uncover and assemble the information needed for a civil trial. A civil trial is the opposite of a criminal trial. In most cases, this type of court case involves individual citizens who are arguing about an issue that relates to their rights as citizens. J. Edgar Investigation Agency has investigated tenant and landlord disputes, animal ownership, care and control, noise complaints, property maintenance. Investigation is imperative in order to provide sufficient evidence in court. Documentation of an investigation may involve video, photographs, physical evidence, and witness interviews.