24 Theories, 19 Months, 1 Flipped Witness: Inside The Investigation Against Brendan Banfield

There were 24 competing theories before the au pair changed her story. Nineteen months passed before charges were filed. Eight months went by before a key piece of evidence was collected. The original prosecutor was removed after being cited for drinking at 8 a.m. And the forensics expert whose findings contradicted the prosecution's case was transferred out of his unit.

That's the investigation against Brendan Banfield.

On February 24, 2023, Christine Banfield was stabbed to death in her Herndon, Virginia home. Joseph Ryan was shot twice by two different guns. Prosecutors allege Brendan and au pair Juliana Peres Magalhaes were having an affair and conspired to kill Christine, using a FetLife profile to lure Ryan as a patsy and claim self-defense.

Officer Brendan Miller analyzed 60 devices. His conclusion: Christine — not Brendan — appeared to control the FetLife account. The University of Alabama peer-reviewed and confirmed his findings. Then Miller was told he'd never work another digital forensics case. He was transferred. The lead detective who disagreed with command staff was reassigned.

Juliana faced murder charges for a year before flipping. Her plea deal lets her walk free if she testifies against Banfield. The prosecution's case now rests almost entirely on her.

Retired FBI Special Agent Jennifer Coffindaffer examines what the FBI would have done differently from day one. Judge Penney Azcarate ordered prosecutors to turn over all communications about Miller's transfer. The defense calls this case "a theory in search of facts."

The Banfields' 4-year-old daughter was in the basement that morning. Whatever the jury decides, she's already lost her mother — and potentially her father.

#BrendanBanfield #ChristineBanfield #JulianaPeresMagalhaes #JosephRyan #FetLife #AuPairMurder #BrendanMiller #JenniferCoffindaffer #FairfaxCounty #MurderTrial

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This publication contains commentary and opinion based on publicly available information. All individuals are presumed innocent until proven guilty in a court of law. Nothing published here should be taken as a statement of fact, health or legal advice.