In the memoir, Lisa Marie Presley details the toll that her legendary dad's death - when she was just nine - took on her. For the first time, she describes waking up on the afternoon that he died in August 1977 and sensing something was wrong, before running into her father's room across the hallway and seeing him facedown on the bathroom floor.

During a conversation with Oprah, Riley Keough reflected on her family’s legacy, sharing memories of her mother Lisa Marie Presley and her late grandfather Elvis, including Lisa’s recollections of Elvis’s struggles and her tragic final memories of him when she was just nine.

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.