Oprah Winfrey announced on Tuesday that "From Here to the Great Unknown" is her latest book club selection. Keough helped complete the memoir using her mother's voice recordings, which captured detailed stories about life at Graceland and the lasting effect of Elvis Presley's death.

Lisa Marie Presley's memoir 'From Here to the Great Unknown' reveals why she kept her son Benjamin's body on dry ice for 2 months after his death, writing: "There is no law in the state of California that you have to bury someone immediately.

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.