Investigation into Nebraska teen's 1969 murder spans five decades

The unsolved murder of Mary Kay Heese, 17, a high school junior from Wahoo, Nebraska, has hung over the community for five decades. Will what is believed to be the state's oldest cold case finally be solved?

source https://www.cbsnews.com/news/mary-kay-heese-wahoo-nebraska-unsolved-murder-joseph-ambroz-48-hours/