The only woman that disgraced comic Bill Cosby admits cheating with has come forward to accuse him of drugging and raping her too.

And she claims that her daughter, Autumn Jackson, who was jailed in 1998 for trying to extort Cosby for $40 million, was a child of that rape.

Shawn Brown says the rape happened despite her being willing to have sex with him.

'Looking back, I think it was probably because I wasn't as freaky in bed as he liked without being drugged,' three-times-married Brown told MailOnline in an exclusive interview at her home in San Antonio,Texas.

Brown's new claim puts further pressure on Cosby, whose career is now in tatters after more than a dozen women have accused him of knocking them out with a powerful drug slipped in a drink, and then sexually assaulting them.

The only woman that disgraced comic Bill Cosby admits cheating with - Shawn Brown - has come forward to accuse him of drugging and raping her too

Mommy and me: Cosby admitted having sex with Brown during an interview with Dan Rather shortly after his son Ennis was murdered in 1997. Rather asked him if there was any possibility he was Autumn's father.'There's a possibility,' Cosby answered to Rather's amazement. 'I mean, if you said 'Did you make love to the woman?' the answer is yes'

Slick: Shawn, daughter of a Las Vegas show girl, met Bill while she was watching a friend perform at a Los Angeles hotel. 'I had grown up in Vegas and had been around a lot of movie stars so I wasn't star struck'

'I believe all the other women,' Brown, now 62, said. 'The stories they have told are almost identical to what he did to me. His MO was the same, he drugged them and when they woke up they were naked and had had sex.'

Cosby admitted having sex with Brown — then known by her maiden name of Shawn Byers — during an interview with Dan Rather shortly after his son Ennis was murdered in 1997. The interview was primarily about Ennis, but Rather asked him if there was any possibility he was Autumn's father.

'There's a possibility,' Cosby answered to Rather's amazement. 'I mean, if you said 'Did you make love to the woman?' the answer is yes. 'Are you the father?' No.'

Brown, a retired sales executive, told MailOnline the affair lasted from September to November of 1973. 'I can't remember exactly how many times we had sex, but it was more than two and less than 10,' she said.

The mother-of-four's accusations are remarkably similar to those made by the other women. But she points out she is not jumping late on to the bandwagon of Cosby bashers.

She made the same claims to a supermarket tabloid a decade ago when the first allegations of rape were made against Cosby by Andrea Constand, the former women's basketball athletics director at Temple University. In court papers, Constand, too, revealed that Cosby had drugged and sexually assaulted her, this time in his Philadelphia area mansion.

'But nobody wanted to believe me then because it was the National Enquirer and we were talking about America's favorite father,' says Brown.

It wasn't until MailOnline's exclusive interview in October with Barbara Bowman, a model and aspiring actress in the 1980's who described her years long abuse by the comic, that a flood of victims decided to finally come forward and tell their shocking stories.

Shawn Byers was the daughter of a former Las Vegas showgirl. She was 20 when she met Cosby in September 1973, as she watched her friend, lounge singer Carol Denmark, perform at the newly opened Marriott hotel on Century Boulevard in Los Angeles.

Denmark — who had another life as Jet magazine's fashion commentator Carol DiPasalegne and was later brutally murdered — was at the time married to the brother of a U.S. senator so other famous people came to watch her perform.

Cosby and Shawn met several times after he raped her, though they never had sex again. 'I remember around 1981, he said come to my room. Autumn was six or seven and I had pictures of her. We were sitting at his bar area and I was showing them to him.'

Shawn and her daughter Autumn Jackson pictured together during Jackson's trial in 1997

'We were sitting at a table with Dionne Warwick and her husband when Bill came in the room,' she told MailOnline. 'He was working the room, going through the crowd and came to our table to say hello to Dionne and I was introduced to him. He didn't seem to pay me much attention at first.'

'I had grown up in Vegas and had been around a lot of movie stars so I wasn't star struck,' she added.

Cosby danced with several women and then asked Shawn to dance. 'It was a slow dance and we were close and talking and he asked me if I would join him for breakfast after the show, saying he had to go back to Philadelphia in the morning.'

Shawn agreed, but shortly afterwards a friend came in the club and invited her out. She wrote Cosby a note, including her phone number and made her excuses and left.

'I think it was because I wasn't falling all over him that he was attracted to me,' she said. 'I told him something important had come up and the next time he was in town he should give me a call.'

By the time she got home her phone was ringing off the hook as Cosby tried to contact her.

Three weeks later the comedian called again saying he was in Las Vegas and asked her to join him. 'He said he was at the Hilton and that there would be an airplane ticket waiting for me at the gate in Los Angeles and a car to meet me in Vegas.'

When she arrived, Cosby was playing tennis with Charlton Heston, Shirley Bassey and the hotel's tennis pro. She watched them for a while, then they went back to the room before going to the casino where Cosby played baccarat and she hit the blackjack tables.

They later ended up in his penthouse suite where Brown said she initially resisted his advances. 'He was a lot older than me, he was in his late-30s and I wasn't that attracted to him physically. I told him I don't just have sex with someone who offers me a trip to Las Vegas.

Shawn Brown, 61, Bill Cosby's former mistress, pictured outside her home in San Antonio, Texas.

Teflon: Cosby survived a civil lawsuit brought by 13 women in 2005, but those renewed claims have been joined by fresh allegations from other women in the last few weeks

'So we talked for a couple of hours about what I wanted to do with my life, about him, his wife, his kids and a lot of different things. We started kissing and one thing led to another and, yes, we eventually had sex.'

The affair continued for a couple of months, Brown said, before Cosby called again from the Culver City set of his movie 'Uptown Saturday Night'.

'He was living in a big house off Canon Boulevard in Beverly Hills,' she said. 'He told me he would have his valet, Mr Williams, come and pick me up.

'It must have been early November because when I got there, there was still Halloween candy in a big bowl on the table. We went into the library and ate hors d'oeuvres. He and Mr. Williams were drinking, I think it was Scotch. I just remember the beautiful glass, all different colors reflected in it.

'I had just turned 21 and I didn't drink alcohol. He said "try it, it tastes good". When I did, all I could taste was the alcohol, he kept saying: "Drink more, drink more." '

Brown said Cosby and Williams, who she said was a few years older than Cosby, shared a marijuana joint as the room started spinning. 'I told them I didn't want any but I took a puff — but like Clinton, I didn't inhale, I just blew it straight back out.'

The two men went to play pool and she watched. 'I was sitting in this wicker chair, hanging from the ceiling. It felt like I was sitting way up high in the corner, that's how loopy I was — I felt like I was floating.

'I was in another world, it was more than drowsy, I knew that any second I would be out cold.'

Brown said she remembers nothing else until she woke up the following morning naked in Cosby's king-sized bed. 'I knew I had had sex. My whole body ached. There was no place that was untouched.

Pretty as a picture: Autumn Jackson, 16, in a high school photo from 1991 in Clear Lake, California

'I asked Bill what the heck had happened, and he said 'You were a little tired so I put you to bed. I said that we had obviously had sex, and he looked at me and said: "I can't believe you don't remember it. You seemed like you would remember it."

'He was implying that I had been much less inhibited than I normally was.

'I had never really been into him and the other times I had really just been going through the motions,' Brown admitted.

'I don't think I was freaky enough for him, and that's why he drugged me.

'It's not that he asked me to do anything that I wouldn't do, but sex with Bill just wasn't mind-blowing because I wasn't really into him 100 percent. It wasn't bad, but it wasn't a case of ripping each others' clothes off like it would be if you were madly in love.

'I just don't know what happened. I also wonder if there were ever pictures of that night — Polaroids were really big at that time.'

Tennis fan: Cosby arrives at a 1973 celebrity tennis tournament in LA in 1973

Score: The comic called Shawn and asked her to join him in Vegas. When she arrived, Cosby was playing tennis with Charlton Heston, Shirley Bassey and the hotel's tennis pro. Here Cosby chats with O.J. Simpson at his celebrity tennis tournament in Los Angeles

The affair continued for a couple of months, Brown said, before Cosby called again from the Culver City set of his movie Uptown Saturday Night, in which he starred with Sidney Poitier

Soon after, Brown found she was pregnant. To this day she believes that her daughter, Autumn, now a 40-year-old kitchen and bathroom designer living in Maryland, is Cosby's child. When she told him, he persuaded her to put her former boyfriend Jerald Jackson's name on the birth certificate, for fear of tarnishing the actor's reputation.

'I had been with Jerry that summer and was sleeping with him when I first slept with Bill. But I broke it off when I found he was married and had just had a child. I remember having my period after I last had sex with Jerry, so I know Autumn wasn't his and there was no other man in my life.'



THE WOMEN WHO SAY THEY WERE ATTACKED BY COSBY Andrea Constand - A Temple University employee, she claimed in 2006 that Cosby drugged and sexually assaulted her in his Philadelphia-area mansion two years earlier. Cosby eventually settled this suit out of court as the prosecution said they had 13 Jane Does who would testify Cosby did the same to them in the past. Barbara Bowman - Bowman told MailOnline that Cosby raped and drugged her back in 1985 when she was a 18-year-old aspiring actress. Bowman was one of the 13 Jane Does in the 2006 trial against Cosby. Joan Tarshis - Tarshis claimed that she was just 19-years-old when Cosby drugged and raped her twice in Hollywood back in 1969 while she was working as a writer for him. Janice Dickinson - The supermodel said in an interview that Cosby asked her to come to Lake Tahoe and talk about a television role in 1982, but ended up drugging and raping her. Tamara Green - Green, who first came forward in 2005 told MailOnline that she was an aspiring actress in the 1970s when Cosby gave her pills and pretended to care for her while she had the flu, but instead sexually assaulted her. Therese Serignese - Also one of the 13 Jane Does, she says she was 19 when Cosby drugged and raped her in Las Vegas after one of his shows. Louisa Moritz - She accused Cosby of sexual assault, saying he once forced her into oral sex, backstage at The Tonight Show Starring Johnny Carson in 1971, and implied he would further her career if she went through with it. Linda Joy Traitz - She said earlier this week that she was just 19 when Cosby drove her out to a beach and tried to get her to take pills to relax, before becoming 'sexually aggressive'. Traitz, of Hallandale Beach, Florida, has been charged in the past with trafficking pills. Cosby's attorney, Marty Singer, is trying to use Traitz's past to discredit her claims against his client. Beth Ferrier - Beth Ferrier claims she had relationship with Cosby in the mid-1980s. She claims that she awoke in her car with her clothes in disarray and not remembering what had happened. Ferrier has claimed that he drugged her coffee. Carla Ferrigno - The wife of Incredible Hulk star Lou Ferrigno, claims Cosby tried to sexually assault her during a gathering at his house in 1967. What's more, Cosby allegedly tried to use a friend to help court Ferrigno, and allegedly made his move on the former Playboy Bunny just moments after his own wife, Camille, left the room. Angela Leslie - The former model-actress claims that Cosby forced her to masturbate him in his Vegas hotel suite after giving her a strong drink in 1992. Renita Chainey Hill - The 47-year-old mother-of-three who met Cosby when she was offered a role on Picture Pages in Pittsburgh claimed he would fly her to different cities around the United States and drug her during a four-year relationship. Kristina Ruehli - A New Hampshire grandmother-of-eight, now 71, claims Cosby invited her back to his house for 'party'. She arrived and no one was there. Ruehli alleges that he drugged two bourbons he poured her and she came to when he was on top of her, shirtless. Victoria Valentino - The former Playboy playmate claims Cosby drugged her and a friend, tried to rape her friend then violated her instead in a Hollywood apartment after dinner. Jewel Allison - The former model accused Cosby of drugging her wine and making her feel his genitals before kissing her during a dinner at his home in the late Eighties. Donna Motsinger – Motsinger, now 73, was Jane Doe No. 8 in the suit filed by Andrea Constand against Cosby. She says now she feels guilty that she didn’t tell her story that Cosby drugged and raped her in 1971 when she worked as a waitress at a jazz club in Sausalito, Calif.

Cosby and Shawn met several times after that, though they never had sex again. 'I remember around 1981, he said come to my room, it was the same room in the Las Vegas Hilton that we had been in.

'Autumn was six or seven and I had pictures of her. We were sitting at his bar area and I was showing them to him, when this little blonde gymnast came out of the bedroom doing cartwheels. She was wearing tiny shorts and socks and a little t-shirt, doing flips across the floor.

'She asked us what we were doing and he said we were talking. She came over to us, put her arms around him and started kissing on him like she was spraying her territory, but by that time I wasn't interested. He told her to go off and play tennis but she didn't want to.

'We went out, he drove in his Mercedes, he took me to Neiman Marcus and bought me a little crystal turtle. It was two hundred and some bucks. He offered them $200 and said he didn't want to pay the tax. Then he bought a pair of size 8 tennis shoes for his new girlfriend.

'I asked him in the car what had happened on that night years before. I said: "Did you spike my drink, because that was the roughest night I had ever gone through."

Autumn at her mother's best friend's birthday party in Los Angeles in 2000. When Shawn told Cosby about her pregnancy he persuaded her to put her former boyfriend Jerald Jackson's name on the birth certificate, for fear of tarnishing the actor's reputation

'He said: "What are you talking about?" and laughed it off — but he never said yes or no.'

Brown and Cosby continued to speak on the phone, she told MailOnline. Although he denied that Autumn was his daughter he financially supported the family.

'Every Tuesday a FedEx would come with a check for $750,' Brown remembered. 'It wasn't a huge amount, but it was enough to allow me to stay at home with my children.'

Those checks ended after Autumn's court case. In all, Brown estimates Cosby gave her a total of some $250,000 in gifts and the weekly checks over the years.

He helped Autumn get to college and even agreed to place a picture of her on the set of 'The Cosby Show' so she could see herself on television.

Her feelings only turned against him after Autumn was accused of extorting him for $40 million, threatening to tell her story unless he paid up. He persuaded Autumn, then 22, to fly to New York to discuss the case. But she was arrested and charged with crossing state lines to commit the felony. She was eventually jailed for 26 months, although the case was overturned on appeal.