Virginia Murder: Ex-IRS Officer Guilty in Wife & Man’s Deaths – Affair & ‘Catfishing’ Plot Revealed

Virginia Man Convicted in Elaborate Murder Plot with Au Pair

Fairfax, Virginia – Brendan Banfield, a former IRS law enforcement officer, was found guilty on Monday, February 2, 2026, of the aggravated murders of his wife, Christine Banfield and Joseph Ryan, according to reports. The verdict concludes a trial centered around a complex scheme prosecutors allege was fueled by Banfield’s affair with the family’s Brazilian au pair, Juliana Peres Magalhães.

Banfield initially told police he discovered Joseph Ryan attacking his wife with a knife on the morning of February 24, 2023, and subsequently shot Ryan. He claimed Magalhães then shot Ryan as well. However, prosecutors argued this account was a fabrication designed to conceal a premeditated plot to eliminate his wife and frame Ryan.

The prosecution’s case rested heavily on the testimony of Juliana Peres Magalhães, who pleaded guilty to manslaughter in 2024. Magalhães testified that she and Banfield had impersonated Christine Banfield on a fetish website, luring Ryan to the Banfields’ home under the guise of a consensual, but violent, sexual encounter. The intent, she stated, was to stage the scene to appear as though Ryan had been an intruder attacking Christine, and that they had acted in self-defense.

Defense attorney John Carroll challenged Magalhães’ credibility, arguing she was cooperating with prosecutors to secure a lenient sentence. He also presented evidence suggesting internal disagreement within the Fairfax County Police Department regarding the “catfishing” theory – the idea that Christine Banfield was not the one operating the online profile. Carroll claimed an officer who concluded Christine Banfield was behind the social media account was later transferred, allegedly as punishment for disagreeing with the department’s favored narrative.

In his own testimony, Banfield dismissed the allegations as “absolutely crazy.” He downplayed the nature of his relationship with Magalhães, admitting only to telling her “I loved her” at certain points and acknowledging discussions about potential baby names.

Despite Banfield’s denials, prosecutor Jenna Sands emphasized the “plethora of evidence” supporting the prosecution’s case during closing arguments. This included expert testimony regarding bloodstain patterns on Ryan’s hands, which suggested Christine Banfield’s blood had been dripped onto him from above.

The jury deliberated for nearly nine hours over two days before reaching a unanimous verdict. Banfield was found guilty on all four charges, including two counts of aggravated murder, using a firearm in the commission of a crime, and child endangerment for leaving his then-4-year-old daughter unattended in the basement during the violence. He now faces the possibility of life in prison.

Magalhães is scheduled to be sentenced following Banfield’s sentencing. Attorneys have indicated she may be allowed to walk free if sentenced to time already served.

The case drew significant attention, highlighting the complexities of modern investigations involving online interactions and the challenges of establishing motive in cases of domestic violence and betrayal.