48 Hours: Season 23, Episode 11

23 - 11: Live to Tell: The Railroad Killer

For 20-year-old Holly Dunn, Labor Day weekend 1997, marked the start of her junior year at the University of Kentucky - a semester that was full of possibilities. She belonged to a popular sorority and had recently started dating a young man named Chris Maier. On a late August night, the couple had left a party to take a midnight stroll under the stars to watch the passing trains, but as they were returning from their walk near the railroad tracks, a dark figure holding a sharp object suddenly emerged.