"When Lauren Spierer-a gregarious young woman at a crossroads in her life-vanished from Indiana University in 2011, her story drew global attention from celebrities and news outlets such as People magazine, CNN, Fox News, and USA Today. What made the case so confounding to those outlets was that the 20-year-old was out with dozens of classmates in a bustling university town on the night she went missing. She was seen in public by witnesses and security...