The result of that interview was the "20/20" report "Justice at Last?" that aired on ABC in June 2000.
Gilbert did not live to see the justice he sought "for those two boys." He died in October 2004.
But one of the other reputed former Klansmen Gilbert implicated in his interview, Charles Marcus Edwards, will be the government's star witness when James Ford Seale is tried for the kidnapping and murder of Dee and Moore later this month. Seale has pleaded not guilty and maintains his innocence.
Edwards was briefly arrested at the time and allegedly admitted involvement in the murders, according to a 1964 FBI report, but quickly denied having ever made such an admission.
When Edwards appeared for an interview with "20/20" outside his Mississippi home back in 1999, he looked like a man bearing a tremendous burden. His face drawn, he told us that he had found religion back in the 1960s and had been a God-fearing, churchgoing man ever since. A large, well-worn Bible occupied a prominent place at the center of his kitchen table.
However, in the "20/20" interview, Edwards repeatedly denied having anything to do with the murders. He insisted that the FBI report of his alleged confession was false and he wished that the entire matter would just go away. Click here for a PDF transcript of the interview.
Now prosecutors say Edwards is ready -- finally -- to tell the whole truth and nothing but the truth.
If convicted, Seale, now 71, could face life in prison.
Read the transcript of the original "20/20" report.
Read the transcript of ABC's interview with Ernest Gilbert: Part 1, Part 2.
See the FBI files obtained by "20/20"
Read the transcript of the "20/20" interview with Charles Marcus Edwards (PDF)