True Crime: Where Is Susan Powell? New Information On The Woman Who Made A Desperate Plea On Camera Before Disappearing

On today's True Crime, Dr. Oz investigates the mysterious disappearance of Susan Powell.  A young suburban mom who made an unusual video and then disappeared without a trace.

We take a closer look at the life she left behind and shocking family secrets that may hold the key to the unsolved case.

Plus, Dr. Oz examines claims that knowing your blood pressure can help determine your risk for Alzheimer's and shows you the test you can try at home today.