Much of Virginia Giuffre's story has been heard before, but in her memoir, published posthumously, the abuse is described in appalling detail.
Two days ahead of the book's official publication, the BBC got hold of a copy.
There are revelations about Ms Giuffre's encounters with convicted sex offender Jeffrey Epstein and his former girlfriend Ghislaine Maxwell - as well as more details of her allegations about Prince Andrew, which he has always denied.
Here's what we learned from the 367-page-long book.
Prince Andrew allegations - and an 'orgy'
In the memoir, Ms Giuffre says she had sex with Prince Andrew on three separate occasions. The third time, she alleges, was on Epstein's island as part of what Ms Giuffre called 'an orgy'.
'Epstein, Andy, and approximately eight other young girls and I had sex together,' she recalls. 'The other girls all appeared to be under the age of 18 and didn't really speak English. Epstein laughed about how they couldn't really communicate, saying they are the easiest girls to get along with.'
She later recalls seeing the photo of Epstein walking in New York's central park with Prince Andrew, published in newspapers around the world in 2011. 'I was of course revolted to see two of my abusers together, out for a stroll,' she writes. 'But mostly I was amazed that a member of the Royal Family would be stupid enough to appear in public with Epstein.'
Prince Andrew, who reached a financial settlement with Ms Giuffre in 2022, has repeatedly denied any wrongdoing.
'Epstein told me I'd had a miscarriage'
Shortly after the alleged 'orgy', Ms Giuffre states she 'wasn't in great shape', suffering irregular bleeding and abdominal tenderness. She recounts being taken to a hospital by Epstein, but due to pain medication, her memory remains foggy.
Afterward, a girl at Epstein's house suggested that an incision mark near her belly button indicated she had surgery for an ectopic pregnancy, but Epstein told her she'd suffered a miscarriage. 'Epstein never wore a condom. Neither did the men he and Maxwell trafficked me to.'
Memories of Epstein 'torture' Giuffre
At the center of the abuse was Epstein and Maxwell, who is serving a 20-year sentence on sex-trafficking charges. Ms Giuffre states the memories of what Epstein put her through 'torture' her, leading her to fear she might 'die a sex slave'.
The memoir includes shocking descriptions of sadomasochistic sex. She notes that Epstein began to 'experiment with whips and restraints and other instruments of torture'. 'In session after session, he would play out various fantasies, with me as the victim,' she writes.
She describes the physical toll of the abuse, highlighting how Epstein was 'disgusted' by her deteriorating appearance. 'You're not the same girl you were,' he said coldly. 'You need to clean yourself up.'
Maxwell's part in the abuse
Ms Giuffre recounts her first meeting with Maxwell, who approached her at the Mar-a-Lago spa where she worked. After being invited to an interview, she found Epstein completely naked and soon became a victim of sexual abuse.
She writes about the emotional devastation and embarrassment caused by the experiences, marking a turning point in her life.
Disappointment at Epstein's death
A recurring theme in the book is Ms Giuffre's desire for accountability, expressing disappointment over Epstein's death before he could face justice. 'This wasn't how justice was supposed to work out,' she reflects.
As she wishes for Prince Andrew to be held accountable, she articulates her hope that the memoir will help others who have suffered similar experiences. 'If this book moves us even an inch closer to a reality like that - if it helps just one person - I will have achieved my goal.'
