Key evidence in the disappearance and death of millionaire Andreen McDonald

Millionaire business owner Andreen McDonald was known for her strict workout regimen. On the morning of March 1, 2019, when she didn't show up for work, her employees called the gym, which was her usual first stop in her morning routine. They found out she never showed up there either, which raised red flags. What happened to the San Antonio businesswoman, wife and mother?  

Married couple Andreen and Andre McDonald were the picture of success. Andre McDonald was a major in the Air Force, and together, he and Andreen McDonald built an assisted living business from the ground up and became millionaires.