The Top 10 Most Mysterious Celebrity Deaths

The death of Oscar winner and style-icon Grace Kelly on September 13, 1982, was definitely a tragedy. For reasons unknown, Kelly's car drove over the edge of a cliff where she plunged 35 yards before her car burst into flames. She suffered multiple fractures, including a broken thighbone, collar bone as well as a few fractured ribs. Her 17-year-old daughter, at the time Stephanie, survived the crash which led the media to believe that she was in fact driving and had purposely killed her mother. She has denied all accusations numerous times in dozens of interviews, but no one will ever know for sure what really happened on that fateful day.

Anna Nicole Smith's (✝39) personal nurse found the young actress unconscious in her hotel room on February 8, 2007. The cause of her death was unknown at the time, but it was later discovered that it was due to a drug overdose.

There are many rumors on how Jim Morrison, the lead singer of 'The Doors', died. What we know officially is that Morrison was found dead on July 3, 1971, in the bathtub of his Paris apartment. Even though there was no autopsy performed, a doctor, that came by over the course of 72 hours, signed his death certificate with the official cause being heart failure. Numbers of theories suggest sexual diseases, drugs, murder etc.. His girlfriend met the same fate after a heroin overdose in 1974.

The legendary 'King of Rock and Roll', Elvis Presley, died on August 16, 1977. His cause of death was covered up by his family, but it was suspected he was taking various prescription drugs that made his heart stop. Presley had been struggling with a prescription drug problem as well as general health issues. He was repeatedly hospitalized between 1973 and 1977. His father arranged for the autopsy report to be kept secret until 2027.

Heath Ledger died on January 22, 2008, from a mixture of prescription medication he had taken. Antidepressants, sleeping pills, and sedatives were found on his bedside table. A medical examination confirmed that his death was, in fact, an accident. The combination of sleeping pills and sedatives cost him his life. We might never know why he decided to ingest so many pills at once...

April 5th,1994 marked a sad day for all music fans out there. Kurt Cobain died in his home in Seattle after shooting himself in the head with a rifle while in a state of intoxication caused by his heroin intake. Cobain left a suicide note stating, "It's better to burn out than to fade away." There numerous amounts of conspiracy theories surrounding Cobain's death including one that states that he was actually murdered as a result of a conspiracy against the famous grunge singer. We only know what the reports say, leading us to believe that Cobain's death was a mystery in and of itself.

Michael Jackson died on June 25, 2009, at the age of 50 from a drug overdose. His personal physician Conrad Murray was under investigation for a while because the authorities suspected him of having administered strong narcotics to Jackson to treat his insomnia. The actual cause of his death is still pretty much unknown to the public.

Brittany Murphy died of heart failure in December 2009 at the age of 32. She was found unconscious in the shower of her mansion. On May 23, 2010, Murphy's husband Simon Monjack was found dead at his home in Hollywood, heart failure also being the cause of death. Rumors have it that mold was the actual cause of both of their deaths, but Murphy's father believes that the two were murdered and accused his ex-wife of doing so. Did Sharon, Brittany's mother, really poison the couple due to greed?

The early death of Bob Geldof's daughter Peaches is still a mystery to this date. On April 7th, 2014 Peaches was found dead in her home in Kent after a fatal heroin overdose. There are many theories on the reasons for Peaches' death. Suicide was a plausible theory, but according to her friends, she seemed to be very happy with the life she was living. Further investigation led to detectives finding large amounts of methadone, a substance used to ween heroin addicts off the drug, in her home. She had been trying to rehabilitate herself for a while, and successfully so it seemed. This one is one for the 'X-Files'.

Rapper Tupac Shakur was killed in September 1996 after being shot 16 times. However, several pieces of evidence, such as pictures of Shakur's body having been photoshopped, suggest that Tupac actually faked his death somehow. While the young rapper was in prison, he was seen reading books on how to fake his own death, which only made conspiracy theorists even more sure that they had drawn the right conclusion. What actually happened to the famous hip hop artist stills remains a mystery to this day...