SALEM, Ore. -- District Attorney Walt Beglau of Marion County describes Raymond Roy as a liar, a narcissist and a calculating killer.

On Friday, he will be free.

Roy has spent 24 years in the Oregon State Penitentiary for the deaths of his brother and sister-in-law in Salem. His release has led Beglau and others to call for a comprehensive review of Oregon's rarely examined parole system.

"We ought to be examining the process from the ground up," Beglau said.

Parole officials said Roy will serve a three-year term of post-prison supervision in Clackamas County. Following his prison release, he is required to report to his parole officer by noon Friday.

Roy, 60, informed the Statesman Journal newspaper he would not conduct any interviews before leaving prison.

Appearing before the parole board last November, Roy assured the panel that self-help books, newfound spirituality and prison rehabilitation programs turned him into a new man.

"I consider myself an open book now," he said. "There's nothing that I can't talk about, even though it may be painful at times. There's nothing that I can't address in my life right now."

Roy's case is the second in recent months to trigger outrage against the state Board of Parole and Post-Prison Supervision, a three-member panel appointed by the governor.

Last fall, the board granted parole for Richard Gillmore, the so-called jogger rapist who committed at least nine sexual assaults.

The board concluded that Gillmore could be adequately treated and supervised in the community, even though a clinical psychologist deemed him untreatable and dangerous.

Late last year, Tiffany Edens, who was 13 when Gillmore raped her in 1986, sued the parole board to block the release. In January, a Marion County judge ruled in Eden's favor, and Gillmore remains locked up.

Roy was sentenced to 20 years in prison for manslaughter and life in prison for aggravated murder in the deaths of Richard and Ruby Roy. Under the law at that time, he became eligible for parole after serving 20 years.

Previous parole boards rejected Roy's bids for early release in 2003 and 2005.

In granting him parole at the November session, the board issued a formal explanation: "Based on the doctors' reports, coupled with all the information the board is considering in the record before us today, the board concludes that you do not suffer from a present severe emotional disturbance that constitutes a danger to the health or safety of the community."

Key evidence included two confidential psychological evaluations of Roy. One evaluation was performed by a clinical psychologist hired by Roy and his supporters. Another was performed by a board-hired evaluator.

Beglau said the parole board placed too much emphasis on the 2007 psychological evaluations, including a glowing recommendation from the evaluator hired by the inmate and his supporters.

"There's a whole history of evaluations here," Beglau said. "We have evaluations that don't go too far back that state very clearly their concern about his credibility, deceit and narcissism. Why just consider one point in time?"

Meanwhile, Kim White, Ruby Roy's daughter, says she is frustrated by Roy's release but powerless to stop it.

"I try not to be vindictive," she said. "I think he belongs in prison, but I try not to think about it so much that it destroys my life."