Rather morbid, but I see that an over 46 year old murder has been solved through DNA. The victim was Pamela Milam, and the articles all say that she was leaving a sorority function when she was killed, and left in the trunk of her car. Since this happened in the fall, and Indiana has winter recruitment, this was not a rush event.
Indiana Police ID Alleged Killer of College Student Pamela Milam Nearly 50 Years After Her Death
Does anyone know which was Pamela's sorority?