LOS ANGELES -- After listening to testimony for three months in a Van Nuys courtroom, postal worker Lorie Moore thought her duty as a juror was clear: She would vote to convict Robert Blake for the murder of his wife, Bonny Lee Bakley.

But when a first vote was taken within 90 minutes of starting deliberations, Moore realized hers was not the majority opinion. She was one of only two jurors who thought Blake was guilty. Another was undecided.

By the end of the first week, Moore said in an interview Thursday, she and the other skeptics were mostly in agreement with the majority, having decided that the evidence presented hadn't proved the prosecution's case.

One factor that may have played into that perception, experts suggest, was an increasing desire on the part of juries for the kind of certainty shown on television programs such as "Crime Scene Investigation," in which crimes are solved conclusively in less than an hour.

Across the country, prosecutors say, juries are demanding more from them. In the Blake case, jurors said Thursday that they wanted more convincing evidence, such as conclusive gunshot residue on Blake's hands, or a fingerprint on the murder weapon, or more precision from casual eyewitnesses about Blake's actions around the time Bakley was shot to death in a parked car in Studio City.

"There is no doubt that there's increasing expectation by jurors of (the evidence) they're going to see," said Joshua Marquis, an Oregon prosecutor and member of the board of directors National District Attorneys Association." Prosecutors across the country are very concerned about this." Marquis found it disturbing that Blake jurors "seemed very dismissive of circumstantial evidence," he said. "Well, guess what? In most cases, ... you don't have physical evidence."

There is "an expectation that people from the crime labs will have super technology" to resolve a case," said Barry Scheck, president of the National Association Of Criminal Defense Lawyers and a member of the O.J. Simpson defense team. Nevertheless, Scheck said he thinks the "CSI effect" wasn't a factor in the Blake case. "There was an absence of evidence," he said.

Juror Cecilia Maldonado was among the majority of jurors who said she felt from the beginning that the state had not proven its case. She said she would have liked more of the kind of evidence she has seen in the cases on "CSI."

"I just expected so much more," she said, acknowledging that such television crime shows created "a higher expectation" for her.

Blake, 71, was accused of ambushing his wife on May 4, 2001, near Vitello's restaurant. He also was charged with soliciting two aging Hollywood stuntmen to kill her -- two admitted former drug users whom jurors said they did not believe.

Blake's defense attorney, M. Gerald Schwartzbach, said he purposely picked jurors who would not be turned off by scientific experts testifying about particles of gunshot residue and the way blood spatters. He says he wanted jurors "who were interested in science, because I knew they did sloppy scientific work."

"In the past, if you talk about that kind of evidence, their eyes would kind of glaze over," said Schwartzbach. "But that's not as true now, because of shows like CSI."

Potential Blake jurors were asked, "How often do you watch TV programs that show real-life or dramatized police activities (for example, Cops and 911, Law & Order, CSI)?" Half the jurors ultimately selected said they watched such shows regularly. Two said they watched them "rarely." Answers of the others were not made public at their request.

Once the jurors began deliberating, they examined the evidence in a detective-like fashion. "We went over every piece of evidence and broke down every witness," said Tim Donis, 28, a city employee from Northridge.

The jurors built their own time line for the night of the murder in an attempt to reach agreement. One holdout wanted to inform the judge early in the deliberations that they were deadlocked on the murder charge, but the others prevailed, and they pressed on.

The initially skeptical Moore said she was finally swayed by the testimony of Rebecca Markham and her husband, Andrew Percival, who said they saw Blake walking along from the direction of the restaurant in the minutes before the 911 call was made reporting that Bakley was injured. Ironically, those witnesses were called by the prosecution.

Their testimony "gives credence to the possibility that he went back to get his gun," said juror Charles "Chuck" Safko. Moore agreed.

Moore said she was also convinced that Blake's alibi -- that he returned to the restaurant where he and Blakely had eaten dinner to retrieve a handgun at the time Bakley was shot -- was reasonable. The gun he said he retrieved was not the one used in the crime, which was found in an industrial dumpster nearby.

Moore said she was also swayed by arguments that investigators failed to link Blake to the murder weapon, a World War II-era handgun, through forensic evidence, like gunshot residue or fingerprints and by the fact that Blake did not have blood on his clothing. "There was not enough evidence," Moore said. "I had reasonable doubt."

On March 11, a week after deliberations began, foreman Thomas Nicholson, a retired machinist, signed the verdict finding Blake not guilty of murder.

Jurors then turned to the two remaining charges, that Blake solicited Gary McLarty and Ronald "Duffy" Hambleton, two former stuntmen, to kill his wife.

Jurors could not agree on whether to believe Hambleton, who admitted using methamphetamine and lying at the preliminary hearing about his drug use. He denied that Blake solicited him, then changed his story.

"With Hambleton, it's hard to discern what he told the truth about and what he lied about," said juror Roberto Emerick, 30.

Frustrated by their inability to reach consensus, they turned to the matter of the other stuntman, McLarty. Within hours Monday, the jury voted 12-0 to acquit Blake on the second solicitation charge involving McLarty. "That one went real fast," Safko said.

Jurors believed the testimony of McLarty's adult son, Cole, over the father. Cole testified that his father told him that Blake offered him $10,000 to beat up a stalker.

Turning back to the last stuntman, one juror, who others declined to identify, still believed that Blake had solicited Hambleton to kill Bakley. When that juror offered to vote with the majority to end the deliberations, the others refused. "We told [the juror], 'Don't change your mind because of us,' " Maldonado said.

They deadlocked 11-1 in favor of acquittal on the Hambleton charge. The judge dismissed the count "in the interest of justice."