"He got away with murder," the former prosecutor, 62, says in the current issue of PEOPLE.
Pool / Getty
"It was unprecedented," the best-selling author says of the Trial of the Century. "I'd dealt with press before, but they had always approached me in a non-intrusive way. It had never had an impact on the court or the witnesses."
In a new forward for the e-book version of her 1997 memoir about the trial, Clark comments on how mistrust in the police was a problem then (and now), but she also says the media attention made prosecuting Simpson harder.
"I hated the way it impacted the case – the way it impacted the witnesses. Everyone forgot Ron and Nicole and it became this enormous circus," she says. "That was harmful to the trial and had a terrible impact on [Judge Lance Ito,] who decided that it was going to be his star turn. It was terrible."
Coral Von Zumwalt
"I thought, 'If if they tell the true story and hit the big issues, then maybe that's a good thing," she says of first hearing about the limited series. "There are people who need to know about what happened."
Clark's new crime thriller Blood Defense is available in bookstores May 1 and her best-selling Simpson trial memoir Without a Doubt (featuring a new forward) is available in e-book form now.