Celebrity Key O.J. Simpson Murder Trial Witness Kato Kaelin Says He Thinks the Former Athlete Is 'Guilty' Kato Kaelin, who testified during O.J. Simpson's 1995 trial, told Barbara Walters that in "hindsight" he believes the former football player is guilty By Lindsay Kimble Lindsay Kimble Lindsay Kimble is a Senior Digital News Editor and the Sports Editor for PEOPLE Digital. She's worked at PEOPLE for over seven years as a writer, reporter and editor across our Entertainment, Lifestyle and News teams, covering everything from the Super Bowl to the Met Gala. She's been nominated for the ASME NEXT Awards for Journalists Under 30, and previously wrote for Us Weekly while on staff at Wenner Media. People Editorial Guidelines Published on November 8, 2015 01:30 PM Share Tweet Pin Email 20 years after the infamous 1995 trial, key O.J. Simpson trial witness Kato Kaelin says he believes that the former NFL player is guilty in the murder of Nicole Simpson and Ron Goldman. In an clip from his upcoming Monday interview with Barbara Walters for her Investigation Discovery’s Barbara Walters Presents American Scandals, Kaelin, now 56, opened up about testifying in Simpson’s headline-making trial. At the time of Brown Simpson and Goldman’s murders, Kaelin was a houseguest of the athlete. He was brought in by the prosecution to help establish a time period when Simpson was away from his California home and could have committed the crime. Walters and Kaelin were together at the time Simpson’s not guilty verdict was released, a ruling that the veteran journalist said Kaelin was “shocked” about. “I remember that because you asked me off camera, you said, ‘What do you think?’ and I whispered into your ear, I said ‘I think they made a mistake,’ ” Kaelin revealed in the new interview. He added that he still believes that Simpson should have been found guilty. “I could only say what I knew and that’s what I testified to, my opinion about his guilt is my opinion,” he told Walters. “In my opinion, yes, I think he’s guilty. In hindsight, and everything, 20 years later, I think that O.J. Simpson is guilty.” Kaelin also detailed his memory of the night of the crimes, and recalled helping Simpson pack belongings into a limousine including a backpack that was never found. “I don’t know what was in there but something in there enough for O.J. Simpson to say ‘Don’t touch,’ and it never was found,” he said, although he didn’t say if he though the bag contained the alleged murder weapon. In the preview clip, Kaelin did not give examples of why he thought Simpson was guilty, but he repeated that it was “only my opinion.” Share: Austin And Aaron Rhodes Almost Ignored the Email From Ryan Murphy Asking Them to be on Scream Queens The entire trial and murders will be recreated on the upcoming 2016 FX 10-part miniseries, American Crime Story. Kaelin will be played by 30-year-old Billy Magnussen. Investigation Discovery’s Barbara Walters Presents American Scandals airs Monday at 10 p.m.(ET).