Nico was a german model/actress/singer. You may remember her from The Velvet Underground or Federico Fellini's La Dolce Vita. The irony of her death is that she had been a heroin user for 20 years and when she finally quit, she died. She had a minor heart attack while riding her bicycle, and hit her head as she fell. A passing taxi driver found her unconscious, but had difficulty getting her admitted to local hospitals. She was incorrectly diagnosed as suffering from exposure, and she died the next day. X-rays later revealed severe bleeding in Nico's brain as the cause of her death.