In this final episode of season 4, we discuss the 1992 murder of 25-year-old school teacher Christy Mirack in Lancaster, Pennsylvania. We also examine the investigation and the genetic genealogy that, years later, would help identify her killer. We wrap up the episode by talking about a few other cases that were solved in 2018 using this incredible new technology. You can help support the show by going to patreon.com/criminology An Emash Digital production Learn more about your ad choices. Visit megaphone.fm/adchoices