A prescription drug epidemic is sweeping the nation. Hollywood's widely publicized addiction problem has hit home. Prescriptions drugs are now the leading cause of fatal overdoses in the US. Dr. Oz investigates. Are you at risk?

Here, country music star and recovering prescription drug addict Mindy McCready shares her tragic story on skyrocketing to fame, plummeting to the lowest lows, and struggling to get her life back.

Click here to watch Part 1.