O.J. Simpson's suicide note – famously read by attorney Robert Kardashian on live TV on the afternoon of June 17, 1994, the same day the former football star led police on a dramatic chase through the streets of Los Angeles in his white Bronco – was heavily edited as it was read to the world, according to author Jeffery Toobin.
In a new interview with Dr. Phil, Toobin, author or the book, The Run of His Life: The People vs. O.J. Simpson, which inspired the FX miniseries, "The People vs. O.J. Simpson: American Crime Story," suggests Kardashian corrected Simpson's words to cover up his client's illiteracy.
"It's a shocking document, in and of itself," Toobin tells Dr. Phil of the actual unedited note left behind by Simpson, ahead of his 1994 murder trial, in the deaths of Nicole Brown Simpson and Ronald Goldman.
PHOTOS: Inside O.J. Simpson's 1994 trial
OJ Simpson courtroom (O.J.)
Author claims Robert Kardashian edited O.J. Simpson's suicide note and original suicide note reveals Simpson was 'barely literate'
LOS ANGELES, UNITED STATES: O.J. Simpson (L) talks with attorney Robert Shapiro during an 18 January court hearing in Simpson's double-murder case in Los Angeles, California. Judge Lance Ito ruled that jurors may hear some domestic violence allegations against Simpson. Opening statements in the trial were moved to 23 January. (COLOR KEY: Brown wall) AFP PHOTO (Photo credit should read Vince Bucci/AFP/Getty Images)
LOS ANGELES, CA - JANUARY 23: O.J. Simpson's children from his first marriage, Jason (L), Arnelle (R) and cousin Terri Baker (C) appear in court 23 January in Los Angeles as the former football great and television celebrity's double-murder trial is expected to begin with opening statements. O.J. Simpson is accused of murdering his ex-wife Nicole Brown-Simpson and Ronald Lyle Goldman on 12 June 1994. (COLOR KEY: Collar (L) is red) AFP PHOTO (Photo credit should read RICK MEYER/AFP/Getty Images)
Fred Goldman and Patti Glass Goldman, the father and stepmother of murder victim Ronald Goldman, listen to prosecutor Christopher Darden as he delivers opening statements during the O.J. Simpson murder trial, January 24, Los Angeles, California. (Photo by AFP/Getty Images)
LOS ANGELES, CA - JANUARY 23: O.J. Simpson (R) looks up during a 23 January court hearing in Los Angeles, Ca, as attorney Johnnie Cochran Jr. reviews doucuments in what should be opening day in Simpson's double-murder trial begins. Several evidenciary issues remain before the trial will be heard in front of the jury. (COLOR KEY: Brown wall.) AFP PHOTO (Photo credit should read POO/AFP/Getty Images)
Deputy district attorney Marcia Clark gestures as she addresses the jury for the prosecution's opening statements in the murder trial of O.J. Simpson, Los Angeles, California, January 24, 1995. Simpson was accused of the 12 June 1994 murders of his ex-wife Nicole Brown and Ronald Goldman. (Photo by Myung J. Chun/AFP/Getty Images)
LOS ANGELES, CA - JANUARY 24: Judge Lance Ito looks at prosecutor Marcia Clark as he admonishes her for argumentative behavior during her opening statements to the jury in the O.J. Simpson murder trial 24 January in Los Angeles, CA. Ito ended the hearing later, after learning that the court video camera viewed live images of two jurors. Ito may remove cameras from the courtroom because of the incident. (COLOR KEY: Brown wall) AFP PHOTO (Photo credit should read POO/AFP/Getty Images)
LOS ANGELES, CA - JANUARY 26: Lead prosecutor Marcia Clark (L) talks with fellow prosecutor Christopher Darden during court proceedings 26 January 1995 in Los Angeles. The OJ Simpson trial was delayed by the hospitalization of prosecutor William Hodgman and continuing fray over the defense's failure to turn over the names of its anticipated witnesses. (COLOR KEY: Wall is brown.) AFP PHOTO (Photo credit should read POO/AFP/Getty Images)
LOS ANGELES, CA - JANUARY 31: A picture taken by the Los Angeles Police Department on 01 January 1989 and projected on a screen in the courtroom 31 January 1995 shows Nicole Brown Simpson after her 911 call reporting a spousal abuse episode that defendant O.J. Simpson eventually pleaded no contest to. The picture was displayed by the prosecution during questioning of LAPD Detective John Edwards at the double murder trial of Simpson. AFP PHOTO (Photo credit should read POO/AFP/Getty Images)
LOS ANGELES, CA - FEBRUARY 9: Prosecutors in the O.J. Simpson murder trial Marcia Clark(L) and Christopher Darden(2nd L) show a display of a blood trail 09 February at Nicole Simpson's condominium to the jury and Los Angeles Police Department(LAPD) officer Robert Riske(R) during testimony in Superior Court in Los Angeles. Riske was the first police officer to arrive at the scene where Nicole Simpson and Ron Goldman were murdered. (COLOR KEY:Blue chart.) AFP PHOTO (Photo credit should read POO/AFP/Getty Images)
LOS ANGELES, CA - FEBRUARY 15: Defense attorneys Johnnie Cochran Jr. (R) and Robert Shapiro talk about the prosecution's announcement in court 15 February that the blood found on Nicole Brown Simpon's Bundy residence gate genetically matches that of murder defendant O.J. Simpson. (COLOR KEY: Red in Cochran's tie). AFP PHOTO (Photo credit should read POO/AFP/Getty Images)
LOS ANGELES, CA - JUNE 15: Double murder defendant O.J. Simpson puts on one of the bloody gloves as a Los Angeles Sheriff's Deputy looks on during the O.J. Simpson murder trial 15 June. One of the gloves was found at the murder scene, while the other was found at Simpson's state. AFP PHOTO (Photo credit should read SAM MIRCOVICH/AFP/Getty Images)
This 21 June 1995 file photo shows former US football player and actor O.J. Simpson looking at a new pair of Aris extra-large gloves that prosecutors had him put on during his double-murder trial in Los Angeles. Media tycoon Rupert Murdoch announced 20 November 2006 the cancellation of a controversial book and television interview involving O.J. Simpson being planned by his News Corp company. AFP PHOTO/Vince BUCCI/FILES (Photo credit should read VINCE BUCCI/AFP/Getty Images)
O.J. Simpson tries on a leather glove allegedly used in the murders of Nicole Brown Simpson and Ronald Goldman during testimony in Simpson's murder trial on June 15, 1995 in Los Angeles. (Photo by Lee Celano/WireImage)
LOS ANGELES, CA - JUNE 21: O.J. Simpson shows the jury a new pair of Aris extra-large gloves, similar to the gloves found at the Bundy and Rockingham crime scene 21 June 1995, during his double murder trial in Los Angeles,CA. Deputy Sheriff Roland Jex(L) and Prosecutor Christopher Darden (R) look on. (Photo credit should read VINCE BUCCI/AFP/Getty Images)
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"What most people didn't know is that [Kardashian] was editing as he went along, that O.J. Simpson was, in fact, barely literate," Toobin tells Dr. Phil in the episode airing Monday, February 1. "They created an O.J. Simpson who didn't really exist in real life."
In another revelation from his book he shared with Dr. Phil, Toobin claims attorney Robert Shapiro advised Simpson to take a manslaughter plea in the murder trial, but the former professional athlete-turned-actor refused and shut Shapiro out, in favor of one of his other attorneys, Johnnie Cochran.
"Johnnie Cochran had a very different strategy," Toobin explains to Dr. Phil. "Johnnie Cochran said we can win this case because the history of the LAPD is so bad when it comes to African-Americans, we can make this jury believe that there was a racist conspiracy to frame O.J. Simpson."
On Monday's episode of Dr. Phil, Toobin shares more insights from his book and insights from behind the scenes of Simpson's infamous trial. Dr. Phil also sits down with family members of Nicole Brown Simpson and Ronald Goldman, who share their feelings on the new FX miniseries, which debuts Tuesday night.