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.

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.

Keough opened up about her mother's unexpected death in a new special with Oprah Winfrey about Elvis, her mom, Priscilla, and Graceland.