"I considered very closely on whether I was part of a con game by Glen Rogers," said Monaghan, who said he began looking into Rogers' life during the Tampa trial. "I met many of his victims' families and I met families who have no closure, because Glen has not faced trial in those states. I believe he should not face the death penalty until all those crimes have been investigated."
But a district attorney who prosecuted Rogers, and a detective who interviewed him in connection with an unsolved homicide, both say the convicted killer may be lying in a misguided effort to get off death row.
Los Angeles County Deputy District Attorney Patrick Dixon prosecuted Rogers for the September 1995 murder of a woman in the San Fernando Valley. He said Tuesday there was no mention in that trial of the Brown-Goldman killings, which occurred more than a year earlier.
Dixon said Rogers' brother, who sat through the trial and testified in the penalty phase, never mentioned the O.J. Simpson case. Clay Rogers later wrote a book and "none of this was in the book," he said.
He said Glen Rogers' modus operandi did not match that of the Simpson-Goldman killer other than that he stabbed his victims.
Rogers met his victims in bars, wooed them and moved in with them, Dixon said.
"Then one morning he would wake up and stab them to death," he said.
Of all his victims, he said, Rogers spent the least amount of time with the California woman, Sandra Gallagher of Van Nuys.
Dixon said he was able to prove five murders attributed to Rogers, who has been sentenced to death in California as well as Florida.
Asked why Rogers would now claim responsibility for the high-profile case, Dixon responded that he might be trying to get sent back to California.
"He could be getting close to execution in Florida," Dixon remarked. "They move faster there."
Dan Frazee, a retired sheriff's deputy from Clermont County, Ohio, questioned Rogers about a 1992 unsolved homicide. Rogers tried to make Frazee believe he had knowledge of the case when he really didn't, in hopes of going to Ohio, Frazee said.
"He's got nothing to do in prison right now but sit there and play games," Frazee said, adding that Rogers talked incessantly about death and murder and was "the most evil person I've ever talked to."
"It's like he has no soul," Frazee said.
AP Special Correspondent Linda Deutsch in Los Angeles contributed to this report.
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