A top-secret investigative report points the finger at a new suspect in a savage murder case that has cast suspicion on the Kennedy family for 22 years.
Although the longtime prime suspect has been Robert and Ethel Kennedy's nephew Tommy Skakel, new developments are focusing the spotlight on another Skakel -- Tommy's younger brother Michael.
What's more, the damning report that could lead to Michael's arrest was actually commissioned by his own father!
"I feel that now there's enough proof to take this case to a grand jury," declared famed author Dominick Dunne, who obtained the long-suppressed report. "There have always been people who said Michael was the more logical suspect, but there was never proof. Now I feel there is proof."
Tommy and Michael were among the last to see 15-year-old Martha Moxley alive in 1975 before she was found battered to death with a golf club outside her family's posh home in Greenwich, Conn.
The golf club belonged to the Skakel family, who lived across the street from Moxley.
At the time of the murder, high-powered family lawyers limited the cops' questioning of the boys, who were never charged.
A month into the investigation Tommy was quietly shipped off to Ireland. Michael was sent to a residential treatment center for disturbed adolescents.
And many years passed without cops finding enough proof to indict a killer.
In 1991, the sensational William Kennedy Smith rape trial refocused attention on Martha's murder. And Ethel Kennedy's brother Rushton Skakel hired a team of private eyes to carry out an independent investigation, according to Dunne, who wrote a best-selling novel, "A Season in Purgatory," based on the case.
"They were hired by Rush to clear his son Tommy's name," Dunne told The ENQUIRER. "But instead they came up with a report that pointed toward family members -- Michael in particular -- being involved in the murder.
"The detectives had taken an oath of confidentiality, and obviously nothing was going to happen after they turned in their shocking report to Rush Skakel. It was being deep-sixed."
So a source passed Dunne a copy of the secret report -- and he gave it to O.J. trial detective Mark Fuhrman, who was writing a book about the killing titled, "Murder in Greenwich," which will be published in May.
"The private report is the basis of Mark's book," Dunne said.
But insiders say Fuhrman's investigation has gone far beyond the initial report.
"Fuhrman could help finally put Martha's murderer behind bars," declared an insider.
"This case was stalled and almost forgotten before he launched his own investigation. Fuhrman has forced the state's investigators to take another look at the case.
"His book won't just name the murderer, he'll provide groundbreaking evidence and reveal plenty of details about Michael and Tommy Skakel that were kept quiet for many years. It's guaranteed to outrage a lot of people."
Fuhrman will also provide a motive for the killing, another source added.
"Michael had considered Martha 'his girl' although they had only casually dated.
"On the night of the murder, older brother Thomas began flirting with Martha and Michael worked himself into a rage of jealousy.
"He later confronted Martha and brutally beat her, finally driving the golf club shaft through her neck."
Author Timothy Dumas includes Fuhrman's investigation in his just published book "Greentown: Murder and Mystery in Greenwich" and reveals details of Michael's troubled past, which includes whacking the heads off squirrels with a golf club, his lies to police and a 1978 breakdown.
In a published interview last year, the Skakel brothers' original attorney, Thomas Sheridan, revealed that at the time of the murder, Michael "was seriously chemically dependent and was smoking a lot of pot. He used to drink too much beer as a kid."
Sheridan denied that either brother was involved in the murder.
But the secret report, the two new books and new DNA tests could put Michael in jeopardy. As The ENQUIRER reported in February, new DNA tests conducted by the FBI on fluids found on Martha's clothing may provide crucial evidence.
Lead investigator Inspector Frank Garr of the Connecticut State's Attorney's Office told The ENQUIRER: "A grand jury is certainly one of the possibilities on the table."
And Martha Moxley's mother Dorthy told The ENQUIRER: "I was aware that Rush Skakel had hired his own detectives because they contacted me. But I had no idea what was in their final report.
"I have to pinch myself, but at last I'm daring to believe that we might get justice for Martha."
-- DAVID WRIGHT, PATRICIA TOWLE and MICHAEL GLYNN