Goldman and his daughter Kim sent OJ a card when he was incarcerated in Las Vegas for kidnapping, robbery and assault, saying: 'We hope you enjoy your new home'

To this day, Goldman refuses to refer to OJ Simpson by name. He called him 'the killer'

The father of Kim, Khloe and Kourtney , who died in 2003, carried a suitcase with what Goldman believes was evidence that would have convicted Simpson of the killings.

Fred Goldman, 73, tells MailOnline that Robert Kardashian, OJ's confidant and member of his legal 'Dream Team' was at the footballer's home the night his beloved son Ron and Nicole Brown-Simpson were slain

Robert Kardashian, OJ Simpson’s trusted confidant and member of his “Dream Team" of lawyers, carried away evidence in a suitcase from the former footballer's home the night his ex-wife Nicole Brown-Simpson and her friend Ron Goldman were viciously stabbed to death – and took the secret of where it is to his grave.

‘That evidence would have convicted "the killer",’ says Ron’s father Fred Goldman, who to this day refuses to refer to the disgraced gridiron great by name. Kardashian, dad of Kim, Khloe and Kourtney, died of esophageal cancer in 2003.

That’s one of the shocking claims made by Ron’s father, Fred Goldman, 73, in an exclusive interview with MailOnline in his Peoria, Arizona home on the 20th anniversary of the vicious stabbing murders of Nicole and her friend Ron Goldman.

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Enduring pain: 'Whether it's two days, two months or now twenty years later, nothing has changed.' Ron Goldman's father Fred says about the murder of his son 20 years ago this week. It is still devastating'

Lives cut short: Ron Goldman was 25 and Nicole Brown Simpson was 35 when they were viciously stabbed to death in front of her condominium on North Bundy Drive. Ron was stabbed almost 60 times

O.J. Simpson is surrounded by his 'Dream Team' defense attorneys including Robert Kardashian (right) Johnnie L. Cochran Jr. (left) and Robert Shapiro (center)

According to the Los Angeles Coroner's report, dated June 14, 1994, Ronald Goldman, who was 25 at the time of his death, was stabbed almost sixty times: in his neck, which severed his jugular vein - a fatal wound - the right side of his chest - a fatal wound - and his abdomen - also a fatal wound - but there were many more wounds, some defensive to his hands, but also to his thigh and scalp.

The coroner describes many of the wounds as 'taunting' wounds, indicating that Ron may have been strategically stabbed to torture him before he died.

Nicole Brown-Simpson's neck was cut from ear-to-ear with her head almost severed from her body and she had been stabbed numerous times in other areas. She was 35, the mother of Sydney and Justin Simpson.

In this emotional interview Fred explains how difficult the pain is, as fresh as the day the murders happened on June 12, 1994 and how he will never, ever say OJ Simpson’s name…. but will continue to refer to him as only 'The Killer'.

'Yes, it's 20 years later and it's never any different,' Fred Goldman told MailOnline.

Before the fall: OJ and Nicole, who had two children together - Sydney and Justin - were divorced in 1992. But OJ remained jealous and possessive of his ex, friends revealed

A tisket, a tasket: There are only Easter eggs in the baskets of Kim, Khloe and Kourtney Kardashian. But what was in the suitcase eyewitnesses say they saw Rober Kasdashian carrying out of OJ's house? Goldman contends it was evidence that would have sealed the footballer's fate

‘Whether it's two days, two months or now twenty years later, nothing has changed. It's the same loss, the same feeling that there is a missing piece in our family and it's just as intense as the day he died. It is still devastating.

'Honestly, any family who has gone through this nightmare, understands.

'I still cry about my son and anything can trigger this emotion. It may be just a thought, a memory, a conversation, just a word or if someone reminded me of him.'

'I learned much later that the night he died Ron had overheard someone at the restaurant talking to Nicole on the phone about her mother's glasses. He found them outside.’

Nicole had dined with her family at Mezzaluna restaurant that evening. Ron, who planned to own his own eatery in Brentwood, worked there as a waiter to gain experience in the business.

‘I was not surprised that he volunteered to return the glasses to Nicole on his way home from work. I wish he hadn't.

Mr Goldman does not believe the relation between his son and Nicole extended beyond friendship.

'As far as I know, despite all of the rumors, Ron and Nicole were just friends, they were not dating. As a matter of fact, at the time he was dating a young lady by the name of Jackie. But that's the kind of person he was, he went out of his way for his family and friends.'

The bloody glove: 'If it doesn't fit you must acquit,' said defense attorney Johnnie Cochran about the bloody glove found at the guest bungalow in back of OJ's Rockingham home. Simpson is pictured at his murder trial in 1995

To this day, many have blamed the prosecution team Marcia Clark and Chris Darden for OJ Simpson's acquittal, but Mr Goldman says it wasn't their fault.

'The prosecution did an admirable job but the courtroom was a free-for-all because of Judge Ito. A lot of things were done that were foolish. The gloves... how can you try on gloves that were soaked in blood, they were brittle and you want someone to put them on over latex gloves?

‘What are you contaminating? That should've never happened.

'And the whole issue with Furhman and the N-word. (Detective Mark Furhman, who investigated the murder, was asked if had ever used the N-word, trying to prove that he had planted the glove by the guest bungalow in the back of OJ Simpson's house.) If he said yes, he would be labelled a racist but since he lied he was a lying racist.

I don't think he's a racist, he made a mistake. But to imply he planted evidence as the 33rd police officer to arrive on the scene would make everyone there a racist and they all had to be involved with the cover-up. It was absurd.

'Unfortunately, at that time there was a lot of bad blood between the African-American community and the LAPD and the outcome of the trial is the result.’

Bloodbath: The pathway leading to Nicole's door was a horror show of bloody footprints on June 12, 1994. Nicole's body lay at the end of the walkway just below the steps to her door

Mr Goldman believes that if authorities had handled this case by the book and not changed the venue from Santa Monica, where the trial should have been held, to downtown Los Angeles the result may have been different.

'Justice is supposed to be blind for everyone, not just the wealthy, but this trial was moved because the defense team of Johnnie Cochran, F. Lee Baily, Robert Kardashian and Alan Dershowitz said there were too many white people in Santa Monica and they would convict 'the killer'.

Downtown Los Angeles would have a more racially diverse jury pool and give him a fair trial.

'I understand Johnnie Cochran said if they just get one black person on the jury "the killer" would be acquitted, I guess he was right. But in this country celebrities, no matter what their race, are treated differently.

'The "slow-speed-chase" was not a "chase" at all, it was a "slow-speed-follow!"

'If that had been you or me the police would have pulled that car over or gone to our home to arrest us but certainly not said 'turn yourself in tomorrow, when you have time!'

Mr Goldman says he hasn’t spoken to Marcia Clark in some time, but Chris Darden and his daughter, Kim, talk to him on a regular basis.

Payback: Goldman is still keeping tabs on OJ, who is serving a nine to 33 year sentence for conspiracy, kidnapping, robbery and assault with a deadly weapon in Las Vegas. He believes that OJ was sexually attacked by a fellow inmate

'I still feel bad for Chris because he got a lot of flak from the African-American community for just doing his job.

'Chris has prosecuted hundreds of people, black, white, Hispanic without any prejudice but when he was asked to join the prosecution team against "the killer" he was was unfairly ridiculed. I felt horrible for him, he's a really good guy.

A few years after Simpson. was found not guilty of the double murder, Fred Goldman and his family filed a wrongful death lawsuit and on February 5, 1997 the civil jury unanimously found the former NFL Hall-Of-Famer guilty of battery against Ron and Nicole.

Fred was awarded $33.5 million in damages; he and his family have seen only a fraction of the money.

In February 1999, an auction of Simpson's Heisman Trophy and other property raised almost $500,000, which went to the Goldman family.

After realizing Goldman was never going to stop pursuing the multi-million judgment, Simpson moved from California to Florida because the state law there says a person's residence cannot be collected to satisfy a debt.

The Goldman family also tried to seize his annual NFL pension of $25,000 a month but failed to collect any money.

In 2007 Fred and Kim went to court to fight for the rights to the profits from OJ Simpson's book 'If I Did It' and they won.

Simpson was reportedly paid an $800,000 advance by the publisher and immediately laundered the funds through the accounts of his four children so the lawyers could not trace the payment and collect it towards the civil judgment.

However, according to Fred, none of 'the killer's children saw a dime of that money. Ironically, after the Goldmans added their own opinions to the book it was re-released and some of the proceeds went to Simpson's two youngest children, Justin and Sydney. Fred has never heard from any of Simpson's children but he still wanted to do the right thing by Nicole's children.

Pain: Fred Goldman endured the 133-day murder trial with daughter Kim (left) and wife Patti by his side. To this day he won't utter OJ's name. He refers to him as 'the killer'

'"The killer" didn't look out of for his own kids but I made sure they got something. He didn't, but I did, what does that say about "the killer"?'

Fred said he is not sure of exactly how much money they have received from the $33 million civil judgement from Simpson, but that it wasn't that much. Mr Goldman vows he would never stop going after him as long as he lives.

'"The killer" vowed he would never pay us a penny,' Fred explained, 'that he would go penniless and homeless before he would ever pay on the judgment. We were actually shocked about how much the judgment was but it doesn't matter how much because it was never about the money anyway, but accountability.'

When Simpson was convicted in Las Vegas, Nevada court on October 3, 2008 of conspiracy, kidnapping, robbery and assault with a deadly weapon - 13 years to the day after he was acquitted of the double murder of Nicole Brown-Simpson and Ron Goldman – Fred and Kim sent OJ a card at the Lovelock Correctional Center in Lovelock, Nevada.

‘We hope you enjoy your new home!' it said

Simpson is currently serving his 33-year sentence with the possibility of parole after nine years. He went back to court in 2013 hoping to get his conviction overturned due to poor legal representation but his request was denied by the court stating there was no merit for his accusations.

His earliest possible release date from the Nevada prison will be in 2017.

Mr Goldman says that he’s heard a couple of rumors about Simpson so he called the DA’s office to find out it they were true or not.

The first was that Simpson was beaten up in prison. He found out the former footballer was hit hard in his chest by another inmate but not beaten up badly.

A fatal favor: Ron had everything to live for. He planned to open his own restaurant, and was learning the ropes as a waiter at Mezzaluna restaurant in Brentwood. He was doing Nicole a favor by stopping by to drop off the eyeglasses left behind by her mom earlier that evening

The second rumor was that 'someone in the prison found OJ attractive' so Fred made another call to the DA. The DA told him officials said "We know nothing about that!" – very tongue-in-cheek. When Fred pursued the question the DA told him 'it means what you think it means'.

He was under the impression that Simpson had been sexually attacked.

Fred and his wife, Patti, moved to to Peoria, Arizona about seven years ago from southern California.

Fred and his ex-wife, Sharon Rufo, were divorced in 1974 when Ron was only six.

The Goldmans purchased a $400,000, four-bedroom, three-bathroom, 2,241 square feet home with a two-car garage in a beautiful gated community located about 20 miles from Phoenix.

Mr Goldman still works in real estate and has a part-time job as a salesman in an upscale retail store. He looks exactly the same as when the country got to know him during the murder trial of his son in 1994, including his signature thick mustache with the ends turned up.

His daughter Kim, 42, is doing well. She just published a book, 'My 20-year battle with O.J. Simpson... Can't Forgive' and is executive director of the Santa Clarita Valley Youth Project,

Portrait of tragedy: As he looks over the many photos of his tragic son, Goldman can't help but choke up as he talks about what an amazing young man Ron was. 'He was not only beautiful on the outside but also on the inside. He was warm and tender and would not hurt a fly'

‘She is a remarkable woman who I am proud to call my daughter. She has a 10-year-old son, Sammy, whose middle name is Ron, and she is a wonderful mother.”

Ron's grave is in the Pierce Brothers Valley Oak Memorial Park in Westlake Village, CA. It is nestled under a large tree facing the entrance as though he is waiting for his family and friends to arrive.

Although the letters have begun to look weathered on his marker, his grave site is full of pebbles and rocks that signify ‘friendship' and 'love forever', a Jewish tradition where the stones represent eternity, like the memory of a loved one that will never die, unlike flowers.

When Fred was asked why he thought after 20 years his son was still remembered by so many people that they continue to visit his grave, he said