I'm not entirely sure without more information, but it may involve a major incident like a murder case and the search for the real culprit.
One key point could be the characters involved. Since it's based on a true story, there were probably real people whose lives were deeply affected. Another point might be the setting and how it influenced the events. Also, the process of uncovering the truth in the face of difficulties and potential misinformation could be a key aspect.
Some key points could include the nature of the crime that forms the core of the story. It might be a particularly brutal or puzzling crime. The role of the legal system in dealing with the case is also likely to be important. How evidence was collected, witnesses were questioned, and the prosecution and defense presented their cases. Additionally, the impact on the community, such as the fear, the rumors, and the way people's lives changed as a result of the events, would be significant aspects of the story.