According to Fisher in the 2005 biography "Grievous Angel: An Intimate Biography of Gram Parsons," the amount of morphine consumed by Parsons would be lethal to three regular users; thus, he had likely overestimated his tolerance in light of his diminished intake despite his extensive experience with opiates. Keith Richards stated in the 2004 documentary film "Fallen Angel" that Parsons understood the danger of combining opiates and alcohol and should have known better. Upon Parsons' death, Fisher and McElroy were returned to Los Angeles by Kaufman, who dispersed the remnants of Parsons' drugs in the desert.