How the capture of a serial killer father led to a breakthrough in his own daughter’s separate murder case

Melissa Wolfenbarger, a 21-year-old married mother-of-two, had been missing for four years before her remains were finally identified. But decades passed and the identity of her killer remained a mystery – until now. Crime Scene Investigator Sheryl ‘Mac’ McCollum tells Andrea Cavallier how her podcast, with help from experts, the media and the victim’s serial killer dad helped crack the case wide open