On this episode, Karen speaks with a frequent guest of You Matter!, Dr. Gregg McDonald, Chief Deputy Coroner for Montgomery County, Pennsylvania, and the Dean of the School of Health Sciences and Chair of the Department of Forensic Medicine and Pathology at the Philadelphia College of Osteopathic Medicine. Dr. McDonald and I are going to discuss in this educational episode, what DEA Administrator Ann Milgram has characterized as "the single deadliest drug threat our nation has ever encountered," fentanyl.