The jury in the murder trial of legendary music producer Phil Spector has found it impossible to reach a unanimous verdict.
Phil Spector met Lana Clarkson at a nightclub hours before her death
But why was it so difficult to reach a decision?
Actress Lana Clarkson was found dead from a gunshot wound to the mouth in Phil Spector's home in California in February 2003.
With no witnesses to the shooting except Mr Spector himself, who chose not to take to the stand, it was always going to be a difficult case. Prosecutors claimed he pulled the trigger, while defence lawyers said she shot herself.
In the end, some jurors decided the evidence was not sufficiently convincing.
THE CRIME SCENE
What happened in the two hours after Mr Spector and Ms Clarkson returned from a nightclub was the subject of heated claim and conjecture in court.
Candles were lit on the fireplace and an empty bottle of tequila and two glasses with the pair's fingerprints were found on the coffee table in the living room.
Jurors saw a photo of Ms Clarkson's legs, showing where the gun fell
The jury was told Mr Spector's DNA was found on one of Ms Clarkson's breasts, but there was no sign of intercourse or assault.
In the foyer was a leather briefcase containing some over-the-counter medication and a packet holding one Viagra pill with empty spaces for two more.
There was also a bureau with a draw that was partially opened. In it was a holster that matched the snub-nosed Colt Cobra revolver that killed Ms Clarkson.
She was found sitting in a chair with her legs outstretched and a leopard-print handbag over her shoulder.
She had an "intra-oral" gunshot wound, according to the criminal terminology.
Mr Spector's Brazilian chauffeur Adriano De Souza, who called the emergency services on the night of the death, was a key witness.
Mr De Souza was outside the producer's property when he said he heard a "pow" at about 5am.
Chauffeur Adriano De Souza claimed Mr Spector confessed
His boss emerged from the house several minutes later and told him: "I think I killed somebody," the driver testified.
De Souza then asked: "What happened, sir?" The producer shrugged.
The driver told the 911 operator: "I think my boss killed somebody."
When the operator asked why, De Souza stammered: "Because, he, he have a lady on the, the floor and he have a gun, in, in his hand."
But the defence team questioned De Souza's version of events.
The jury was told that less than 24 hours after the shooting, De Souza was asked by police if he could recall Mr Spector's exact words. "I think so. I think, I'm not sure. It's my English," he said.
At the trial, one of the crucial questions was whether the forensic evidence proved Mr Spector was close enough to the victim to have been able to shoot her in the mouth.
Mr Spector's lawyer Linda Kenney-Baden told jurors the absence of gunshot residue and blood from his sleeves showed he could not have shot Ms Clarkson.
Phil Spector's gun was shown in court
"Those sleeves by themselves prove Phillip is innocent," she said.
Moreover, more forensic experts said Mr Spector's DNA and fingerprints were not found on the gun.
Others told the court the evidence suggested no-one else was involved. "Ninety-nine percent, it's suicide," Dr Vincent DiMaio said.
Ms Kenney-Baden told jurors in her closing argument that "the scientific evidence clearly exonerates him".
But another forensic expert, Lynne Herold, told the court that the pattern of "mist-like" bloodstains on Mr Spector's white jacket suggested he was within two to three feet of the impact.
And Donna Brandelli, another expert, told the jury that fingerprints rarely adhered to the shiny metal surface of a gun.
"We only get fingerprints off guns eight to 10% of the time," she said.
Forensic specialist Steve Renteria said there could have been traces of cells from someone else on the gun but they would have been overwhelmed by the large amount of Ms Clarkson's blood.
During the trial, a string of women gave evidence to say Mr Spector also pointed guns at them over the years.
Former employee and girlfriend Devra Robitaille told jurors he threatened her when she wanted to leave two parties in the 1970s and '80s.
Melissa Grosvenor claimed Mr Spector threatened her in 1992
In the second incident in 1986, she said he was "screaming, ranting and raving: 'You're not going. You're not leaving. I'm not opening the door... I'll blow you away. I'll shoot you.'"
Melissa Grosvenor described Mr Spector as a "very fun" companion - until he tried to stop her leaving his home in 1992.
"He walked right up to me and put the gun right up to my face and said: 'If you try to leave, I'm going to kill you,'" she said.
Stephanie Jennings said the producer held her hostage with a gun in a hotel room in 1995.
Another ex-girlfriend, Dorothy Melvin, said she was threatened with a pistol and shotgun after a night's drinking in 1993.
A fifth woman, Kathy Sullivan, recalled that Mr Spector once escorted her from his mansion carrying a gun for "protection". But she said she never felt threatened.
Much of the trial was spent arguing over whether Lana Clarkson had given up on life after failing to make it as a movie star, and whether she could have been capable of suicide.
Lana Clarkson died of a gunshot fired inside her mouth
She sent letters to friends and a doctor in the months leading up to her death including the phrases "I'm at the end of my rope here" and "I was at the end of my tether".
She also wrote at one point: "This has been definitely the most difficult year of my life. My finances are a shambles and I am on the verge of losing everything."
But her mother told the court her daughter had bought seven pairs of shoes for a new job just hours before she was shot.
She also identified a series of photos the actress had taken to use to seek work about a month before her death.
And in an e-mail sent the day before she died, Ms Clarkson agreed to attend a birthday party for a friend's husband later that month. "Can't wait! Hugs & kisses, Lana," she wrote.