Davis, now 71, who had a life-long rocky relationship with her mother, asserts that Nancy's out-of-wedlock pregnancy carrying Patti, was the secret reason for her parents' union.

Source: https://www.dailymail.co.uk/news/article-12882367/Ronald-Reagan-Nancy-convinced-marry-revealing-pregnancy-Patti-Davis.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

In an August article, reported that another local reported a similar abduction and sexual assault years prior to Nancy's murder, and she suspected a deputy from the Paulding County Sheriff's office was to blame.

Source: https://www.newser.com/story/341233/63-years-after-girl-was-killed-a-new-sketch-of-suspect.html

This story also shows how Nancy's friends help her solve cases from time to time and how much of an asset they can be to her process.

Source: https://screenrant.com/nancy-drew-must-read-comics/