Unsolved for 43 years and you still remember it. Even though they were grandparents of your ex-husband. 1980 might be the year. I wasn't even born then. are you still in touch with your ex-husband? Does he discuss or recount this murder even now?

How wonderfully you turned this into a story. And your phone convo with the detective made me a little nervous as I thought she may suspect you the next moment...thank god you were safe.......