We've all heard the story a hundred times....but here it is again today for anyone interested. (Taken from Wikipedia)
Morrison moved to Paris in March 1971, taking up residence in an apartment at 17 rue Beautreillis. Once in Paris, Morrison lost a great deal of weight and shaved off his beard (although his last photographs show a considerable amount of bloating -- a classic symptom of congestive heart failure). By all accounts he became very depressed while in Paris, but he admired the city's architecture.
He died on July 3, 1971, at age 27, and was found in his bathtub by (Pamels) Courson. Reports stated that he had dried blood around his mouth and nose and large bruising on his chest. Pursuant to French law, no autopsy was performed because the medical examiner found no evidence of foul play. The absence of an official autopsy has left many questions regarding Morrison's cause of death.
In Wonderland Avenue, Danny Sugerman discussed his encounter with Courson after she returned to the United States. According to his account, Courson stated that Morrison had died of a heroin overdose. Courson said that Morrison inhaled the substance because he thought it was cocaine. Sugerman added that Courson had given numerous contradictory versions of Morrison's death, but the majority of fans seem to have accepted the mistaken heroin overdose account. Courson herself died of a heroin overdose a few years later. Like Morrison, she was 27 years old at the time of her death.