Police began to suspect Robin Davis and Carol Saltzman when an examination of their cell phone records suggested they were lying about their whereabouts on the day of the murder. The records showed that Sissy was not at home as she claimed, and instead, her phone was pinging off a tower near the crime scene.
The key pieces of evidence included cell phone records that placed Sissy near the crime scene, the lack of physical evidence tying Brian to the scene, and the inconsistencies in Robin and Sissy's statements. Additionally, Robin's financial troubles and the large insurance payouts she stood to gain were seen as motives.
The jury convicted Robin Davis and Carol Saltzman based on circumstantial evidence, including cell phone records, financial motives, and inconsistencies in their statements. Despite the lack of physical evidence, 11 out of 12 jurors believed the evidence was sufficient to convict.
Shandricka Washington, the lone holdout juror, felt that the prosecution did not have enough evidence to prove the women's guilt. She was troubled by the lack of eyewitnesses, murder weapon, and fingerprints, and found the cell phone evidence insufficient.
Brian Davis had a two-year affair with Fannie Dietz, which ended a few months before his murder. The affair was revealed through explicit emails, which Fannie provided to the police. This information suggested that Brian's philandering ways might have led him to the remote area where he was killed, but Fannie's husband was cleared as a suspect.
The women's lawyers argued that cell phone evidence was unreliable because in rural areas, cell phone signals can bounce to different towers, making it impossible to pinpoint a person's exact location. They performed their own tests to demonstrate this, but these results were not admissible in court.
The surveillance video from Fred's lounge, a bar near the crime scene, could have shown who was driving Brian's car on the day he was killed. However, the video was lost, which deprived the defense of a key piece of evidence that could have exonerated the women.
The prosecution alleged that Robin Davis had significant financial motives, including over $600,000 in insurance payouts. Robin had recently lost her job, accumulated gambling debts, and was on the verge of losing her home, which made the insurance money a substantial motive for murder.
Robin and Sissy's close friendship was a central theme in the trial. Their lawyers argued that their bond was so strong that it would be impossible for one to turn on the other. Despite the conviction, they remain close friends and support each other in prison.
The verdict had a profound impact on both families. Brian Davis' family felt a mix of joy and pain, while Robin and Sissy's families were devastated. The conviction meant that Robin and Sissy would spend the rest of their lives in prison, and their loved ones, especially their children, were left to cope with the loss.
On June 29, 2009, Brian Davis disappeared. According to his wife, Robyn, and her best friend, Carol Saltzman, Brian had left to go boat shopping and never came home. Police soon began to suspect the women when an examination of their cell phone records convinced police that they were lying. The two were both charged with murder when Brian was found shot to death alongside his car on an isolated road in St. Charles, LA. “48 Hours" correspondent Erin Moriarty reports. This classic "48 Hours" episode last aired on 4/13/2013. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.
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