While millions of people lined up to attend Elvis Presley’s shows, his eldest granddaughter, Riley Keough, and her mother, Lisa Marie Presley (Elvis and Priscilla Presley’s only child), were trapped indoors,

Lisa Marie was 9 years old and visiting her father in Memphis at his Graceland home when Elvis Presley died on Aug. 16, 1977.

Lisa Marie's posthumous memoir From Here to the Great Unknown has been completed by her daughter Riley Keough, who used her late mother's audio tapes to help her finish off the project. The book was released this month and in it, Lisa opens up about the aftermath of her father Elvis's death when she was nine, and its effect on her.

Lisa Marie Presley's raw memoir "From Here to the Great Unknown" is out now. Ahead of Oprah's Riley Keough interview, these are the biggest reveals.