As a revolutionary singer, songwriter and record producer, Prince was unique. His flamboyant life offstage proves to be just as covert and mysterious as his unresolved death in 2016 at 57.

Amy Winehouse was making an attempt to recover from heroin and alcohol addiction, but it is believed she was pushed to perform despite her mental, physical and emotional decline.

Robin Williams' life took on another downward spiral when he was diagnosed with Parkinson's disease after years of quietly suffering through severe depression and a deep-rooted drug and alcohol addiction.

English pop star George Michael's private life is revealed to the world in 1998 when he is arrested for engaging in a lewd sexual act with a male police officer in Beverly Hills.

Spotlighting Muhammad Ali, one of the most significant and celebrated sports figures of the 20th century. From the moment Ali lined his pockets with some money, people began to take advantage of him. Right before his death in 2016, Muhammad Ali painstakingly worked to create a plan that would guarantee his beneficiaries financial freedom. He never would have imagined that his last brawl would be between him and his family over his final wishes.

For over half a century, Riley B. King - better known as B.B. King - defined the blues for the world.