Autopsy: The Last Hours of...

In September 1955, 24-year-old actor James Dean died in a horrific car crash near Cholame in California.

Elizabeth Taylor's life had been plagued by ill health, tragedy and failed marriages leading to addictions to alcohol and prescription drugs.

His death comes as a total surprise, but it quickly emerges that Bowie had kept his terminal illness a secret.

The founding member of Velvet Underground lived a life of outrageous excess, pushing everything beyond the limit.

On June 3, 2016 Muhammed Ali died after a long battle with Parkinson's.

James Brown was one of the most iconic and revolutionary performers of all time; in 2006 he died unexpectedly.

Forensic pathologist Dr. Richard Shepherd investigates celebrity deaths.

On Feb. 22, 1987, the most famous living artist dies unexpectedly in a New York hospital at the age of 58.

One of the most influential figures of the hippy scene, she rose to fame as a member of folk-rock band The Mamas and The Papas.

On May 16, 1984, comic Andy Kaufman dies from a rare form of lung cancer at just 35 years of age; a master of invention, he told friends he planned to fake his own death, leading some to believe he did not die.

On June 25, 2009, actress and 1970s icon Farrah Fawcett dies of a rare form of cancer in Los Angeles; her death shocks her fans, friends and family as Farrah didn't smoke, ate healthy food and worked hard to keep fit.

In 2013 country singer Mindy McCready took her own life; Dr. Michael Hunter puts Mindy's personal life under the spotlight, and reveals how her unhealthy relationship with prescription medication may have exacerbated an undiagnosed mental condition.

On Sept. 12, 2003, the world mourns the loss of legendary singer Johnny Cash, who dies in Nashville, Tenn., from respiratory arrest at the age of 71, shortly after the death of his wife of 35 years, June Carter.

On Nov. 29, 2001, amid much secrecy, former Beatle George Harrison dies after a short battle with lung cancer; his death at the age of 58 shocks fans across the world, especially since he had recently been given the all clear.

George Michael, one of the most brilliant performers of his generation; in a career spanning 35 years, his talent for creating enduring music leads him to become one of the greatest recording artists of all time.

In 1973 singer and musician Gram Parsons died in California at only 26 years old; his music combined country, folk, and rock to create his own original sound; often critically acclaimed, he pioneered his own blend of cosmic American music.

On July 4, 2003, singer-songwriter and producer Barry White dies; the self-taught pianist who couldn't read music rises from the tough streets of Los Angeles to become a superstar.

Mary Tyler Moore, considered the sweetheart of American television, stars in two of the most successful sitcoms in history; behind her iconic smile lies a life beset by tragedy, illness and addiction.

James Gandolfini's acting career takes off when he stars in 'The Sopranos,' but his dedication to his craft takes a deep toll on the actor, and rumors of addiction and excess follow him throughout his career.