Fairfax Jury Convicts Brendan Banfield In Double Murder With Au Pair
Jury finds Brendan Banfield guilty in Feb. 24, 2023, killings after prosecutors said he conspired with au pair Juliana Peres Magalhaes to lure a man as a fall guy.

Brendan Banfield found guilty in ‘au pair’ double murder
Virginia man who had affair with au pair found guilty of murdering wife, another man

Virginia man Brendan Banfield learns fate in twisted au pair affair double-murder

Virginia man having affair with au pair found guilty of murdering wife and another man
Overview
A Fairfax County jury convicted Brendan Banfield, 40, on two aggravated murder counts, one firearm count and one child endangerment count in the Feb. 24, 2023, deaths of Christine Banfield and Joseph Ryan, officials confirmed.
Prosecutors alleged Banfield conspired with Brazilian au pair Juliana Peres Magalhaes to catfish and lure Joseph Ryan to the Herndon home for a staged sexual-roleplay plot, according to court documents.
Fairfax County prosecutor Jenna Sands highlighted digital and forensic evidence, including blood-stain analysis, while defense attorney John Carroll argued witness Juliana Peres Magalhaes was unreliable, court records show.
The jury deliberated nearly nine hours across two days before convicting Banfield, officials said, and prosecutors said the couple's daughter, who was 4 at the time, was in the home.
Banfield faces potential life imprisonment at his May 8, 2025, sentencing, officials confirmed, while Magalhaes, who pleaded guilty to manslaughter in 2024 and testified, could be freed if sentenced to time served.
Analysis
Center-leaning sources frame the case as a lurid, premeditated 'elaborate' plot, foregrounding affair and fetish-site details. Editorial choices—loaded descriptors ("salacious", "lurid", "elaborate plot"), repeated focus on FetLife and the au pair, and prominence given to prosecutors' dramatic characterizations—amplify culpability while defense doubts appear as reactive source content.
FAQ
Banfield and Magalhaes allegedly created a fake BDSM profile impersonating Christine Banfield to lure Joseph Ryan to the home for a staged rape fantasy, then killed Ryan and Christine to make it look like a home invasion defense shooting.
Magalhaes pleaded guilty to manslaughter in 2024, testified against Banfield, and could be freed if sentenced to time served.
The affair began in August 2022, after Magalhaes started as au pair in October 2021.
Banfield faces life imprisonment at his sentencing on May 8, 2025.
The defense claimed Magalhaes was unreliable, had changed her story after losing faith in her attorney, and was manipulated by prosecutors into a plea deal.