Short answers, pulled from the story.
Jim Morrison died on the 3rd of July, 1971, at the age of 27, and was found in the bathtub of his Paris apartment at 17-19 Rue Beautreillis. The official cause of death was listed as heart failure, but no autopsy was performed as French law did not require one. Several eyewitnesses, including Marianne Faithfull, have claimed his death was the result of an accidental heroin overdose, but the true cause remains disputed.
Jim Morrison is buried at Pere Lachaise Cemetery in Paris, one of the city's most visited tourist attractions, where Oscar Wilde and Edith Piaf are also buried. His grave was initially unmarked, then marked with a shield that was stolen in 1973. In 1990, his father placed a flat stone bearing the Greek inscription KATA TON DAIMONA EAYTOY, usually translated as "true to his own spirit."
Pamela Courson was Morrison's primary companion throughout his adult life. Morrison's will named Courson as his sole heir, and a California probate court later determined their relationship qualified as a common-law marriage. Morrison dedicated his published poetry books The Lords and New Creatures to Courson, and she was the person who found him unresponsive in their Paris apartment on the morning of his death.
Jim Morrison and keyboardist Ray Manzarek founded the Doors in the summer of 1965 in Venice, California, after Manzarek encountered Morrison on Venice Beach and was struck by his poetic lyrics. Guitarist Robby Krieger and drummer John Densmore joined shortly after. The band took its name from the title of Aldous Huxley's book The Doors of Perception.
On the evening of the 9th of December, 1967, Morrison was arrested during a concert in New Haven, Connecticut, making him the first rock performer to be arrested onstage. Before the show, a police officer who did not recognize Morrison ordered him to leave a backstage shower area; Morrison responded with an obscenity and was maced. Morrison then described the incident to the audience using profanity, leading New Haven police to arrest him for indecency and public obscenity. The charges were later dropped.
In September 1967, Sullivan's censors demanded the Doors change the lyric "Girl we couldn't get much higher" in "Light My Fire" to avoid what they perceived as a drug reference. Morrison agreed backstage but sang the original lyric on live television. Sullivan refused to shake hands with any band member afterward and cancelled all six of the band's planned future bookings on the show.