One morning in 2008, 39-year old Gretchen Crain was working out at her gym in Jupiter, FL, and met a 33-year old personal trainer named David Anthony. Sparks flew immediately and after a few years, the two got married. While David was charming at first, he soon showed signs of violent behavior and mental health issues. Then during COVID-19, Gretchen disappeared and David blamed the deadly virus. Then we cover the disappearance of Dr. Margaret Mary Kilcoyne on Nantucket Island. Kilcoyne was last seen on January 26, 1980. She went to bed at 10:00 or 10:30 p.m. Just before 7:00 a.m. the next day, when her brother came to wake her up, she was gone. Kilcoyne has never been heard from again.