Demi Moore said she was raped at the age of 15 by a man who claimed to have paid her mother 500 US dollars (£401).
The Hollywood star, 56, made the allegation during a candid interview on US television to discuss her memoir.
Moore, one of the most successful actresses of the 1990s thanks to films including Ghost, A Few Good Men and Indecent Proposal, said she was attacked by an older man who knew her mother.
Speaking to Diane Sawyer on Good Morning America, she said she came home to find the alleged rapist in her apartment.
After he had raped her, Moore alleges, he said her mother had sold her to him for 500 US dollars.
Moore’s mother was an alcoholic who died in 1998. Asked if she believed the man, she said: “I think, in my deep heart no. I don’t think it was a straightforward transaction.
“But she still – she did give him the access and put me in harm’s way.”
Moore dedicated her book, Inside Out, to her mother, as well as her three daughters with ex-husband Bruce Willis.
Moore said her mother attempted suicide while the actress was 12 and it was her intervention that saved her life.
“I remember using my fingers, the small fingers of a child, to dig the pills my mother had tried to swallow, out of her mouth,” Moore revealed.
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