On Nov. 12, 2008, Goodspeed parked her car a few doors down from Abdul's Los Angeles home and, according to Los Angeles police, died from an apparent overdose.
At the time, Reuters reported that prescription pills, along with CDs and pictures of Abdul, were found in the car.
Later, Abdul told ABC's "The View" that Goodspeed had been stalking her for 17 years and later told co-host Barbara Walters on Walters' radio show that she pleaded with Cowell and the producers not to let Goodspeed audition.
They did, she said, for the "entertainment value. It's fun for them to cause me stress. This was something that would make good television."
In an earlier interview on "Good Morning America," she said, "what people don't realize, this was a serious, serious situation."
Cowell defended himself and the show's producers in an interview in Us Weekly magazine in December 2008. "What happened was awful," he said. "My regret in all of this was that we didn't know how troubled this person was. If I could've gone back in time and known what she was going through, I wish that we could've spent time trying to help her, but we genuinely didn't know."
The former deputy district attorney from Reno killed herself after she was bounced from "Pirate Master," the CBS reality show that followed 16 would-be modern-day pirates on their quest for $1 million.
The fourth person to leave the show, Kosewicz, 35, was found dead in her home on Jan. 27, 2007, from an apparent suicide. Before committing suicide, she reportedly wrote on the MySpace page of a fellow contestant that she had "lost the strong Cheryl and I'm just floating around lost."
She also blamed the show for coming between her and her boyfriend Ryan O'Neil, who committed suicide himself two months earlier. "This frik'n show…was such a contention between Ryan and I," she reportedly wrote at the time. "The shame seemed to get to her," Kaslow said. "The note was so public and was, in part, blaming the TV show."
Kaslow added that there are often several factors that lead to a suicide and, in Kosewicz's case, losing her boyfriend could have been an additional stressor, while being eliminated from the show may have been the final straw. In the show's final episode, there was a dedication message to Kosewicz.
CBS did not respond to repeated requests for comment.
The "Partridge Family" star allowed VH-1 cameras to follow every detail of his life for "Breaking Bonaduce," including even an apparent suicide attempt.
According to entertainment web site TheWrap.com, the former child actor tried to kill himself by swilling Vodka and Vicodin after his wife Gretchen asked for a divorce during the filming of the reality show – and just prior to the Sept. 12, 2005 premiere. In another episode, he slashed his wrists before checking into rehab.
His behavior only made the show more popular. It was brought back for another season and picked up for international distribution. In the end, his marriage to Gretchen fell apart. But Bonaduce has continued to seek the limelight as a radio personality.
VH-1 did not respond to repeated requests for comment.
The 23-year-old boxer from Philadelphia was reportedly the first reality television show participant to take his own life.
A contestant on the first season of NBC's "The Contender," Turpin shot himself in a parked car just weeks before the series premiere.