Kathy Dobie is a writer who spent several months watching a highly professional sex crimes unit at work. Her in-depth article for the New York Times Magazine covers the challenges the unit has to deal with (legal limitations, budget problems, uncooperative victims, outdated beliefs about what constitutes rape, and more).
Most interesting are the specialized strategies the unit has developed. Officers in the unit say that “he said/she said” cases don’t have to be a dead end. Solid evidence can be found if police are taught what to look for. Gaps in a victim or suspect’s story can be filled in if officers use specialized interview techniques.
Many points would be useful in preparing an effective police report. I highly recommend this article.