Lisa Marie Presley's posthumous memoir shares new insight into the day her father, Elvis Presley, died at Graceland, writing "my life as I knew it is completely over" after her father died at age 42 in 1977.

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.

When Elvis Presley's only child, Lisa Marie, died aged 54 last year she left behind an intimate request: for daughter Riley Keough to finish off her memoir based on recorded tapes and their time together.