Primetime Exclusive: Lisa Marie Presley

April 1 -- She was the King's daughter who married the reclusive pop icon Michael Jackson. Her life has played out on the front pages, but through through it all, she's remained a mystery.

Now, Lisa Marie Presley tells the story of her extraordinary journey — from Graceland … to Neverland … to her nuclear nuptials with film star and Elvis-admirer Nicolas Cage.

Did she really throw a $65,000 engagement ring from Cage into the Pacific? "It was more than $65,000," she said, laughing.

What was life like for a little girl who saw her father self-destruct in front of her? "He'd start to fall, and I'd have to catch him," Presley said in an exclusive interview with Diane Sawyer airing Thursday on ABC's Primetime.

Presley says she remembers when her dad died, but she couldn't understand why thousands of people came to her house to look at his body.

She's struggled to forge her own path. And, at 35, she's doing just that with a debut album, To Whom It May Concern.

Ladies and gentlemen, Lisa Marie has entered the building.