IRS Agent Kills 2, Land In Prison

Empty prison cell with metal bars and toilet. — IRS AGENT KILLED 2

A former federal law enforcement officer used a fetish website, a Brazilian au pair, and a stranger he had never met to construct one of the most calculated domestic murder plots a Virginia jury has seen in years.

Story Snapshot

Brendan Banfield, a former Internal Revenue Service agent, was sentenced to life in prison without parole for the 2023 double murder of his wife Christine Banfield and a stranger named Joseph Ryan.
Banfield was having an affair with the family’s Brazilian au pair, Juliana Peres Magalhaes, who was separately convicted and sentenced for her role in the plot.
Prosecutors argued Banfield lured Ryan through a fetish website under false pretenses, then killed both Ryan and his wife in an elaborate scheme.
Banfield claimed at sentencing that he was innocent, saying he shot Ryan only after discovering him attacking Christine — a story the jury rejected entirely.

The Setup: An Affair, a Scheme, and a Stranger Who Never Knew the Danger

The murders occurred on February 24, 2023, in Herndon, Virginia ^[6]. Banfield was a credentialed law enforcement professional with the Internal Revenue Service (IRS) — someone trained in investigations, evidence, and deception.

That background makes the audacity of what prosecutors described even more striking. According to the prosecution’s theory, Banfield used a fetish website to catfish Joseph Ryan, luring him to the family home under entirely false pretenses ^[8].

Ryan had no connection to the Banfield family. He was simply a man who showed up and never left.

An IRS agent who was having an affair with his family’s au pair was sentenced to life in prison without parole for the murder of his wife and a man who was lured to the couple’s home as a fall guy. https://t.co/kzIRieN9bd

— KWTX News 10 (@kwtx) June 6, 2026

The Brazilian au pair, Juliana Peres Magalhaes, was not a bystander. She was convicted alongside Banfield for her role in orchestrating the plot ^[7]. The affair between Banfield and Magalhaes appears to have been the engine driving the entire scheme.

Christine Banfield stood between them and whatever future they imagined together. Joseph Ryan, a complete stranger, became collateral in a plan designed to eliminate her.

What the Jury Decided and Why It Matters Under Virginia Law

A Fairfax County jury convicted Brendan Robert Banfield of aggravated murder for both deaths ^[2]. That distinction is not a legal technicality. Virginia’s aggravated-murder framework is specifically designed to separate planned, intentional killings from chaotic or defensive acts.

Proving aggravated murder requires the prosecution to demonstrate premeditation and deliberate intent — a far higher bar than a lesser homicide charge. The jury cleared that bar on both counts, which triggered the mandatory sentence: life in prison without the possibility of parole ^[4].

The sentencing hearing in Fairfax gave Banfield his moment to speak, and he used it to deny everything. He told the court, “I was found guilty of a crime that I did not commit,” and argued the prosecution’s evidence and expert witnesses did not hold together ^[5].

His alternative account claimed he shot Ryan only after walking in on Ryan attacking Christine. It is the kind of story that sounds plausible in isolation — until you stack it against the evidence of a premeditated lure through a fetish website, a co-conspirator in the au pair, and the deliberate construction of a scenario designed to look like something other than what it was. The jury was not persuaded, and, frankly, the scheme’s architecture makes the self-defense claim very difficult to take seriously.

The Au Pair’s Sentence and What It Reveals About the Scope of the Plot

Juliana Peres Magalhaes received her own sentence for her participation in the murders ^[7]. The fact that two people were convicted — one the husband, one the live-in au pair — tells you this was not a spontaneous act of rage or a crime of passion in any traditional sense.

Two people coordinated. Two people planned. The presence of a co-conspirator is precisely the kind of detail that separates a domestic tragedy from a calculated elimination.

When a former federal law enforcement officer and his affair partner work in tandem to remove the one person standing between them, that is premeditation by any reasonable definition.

Virginia man gets life in prison for double murder scheme in affair with Brazilian au pair https://t.co/yKJKTemsDC

— ABC11 EyewitnessNews (@ABC11_WTVD) June 6, 2026

Cases like this one attract outsized public attention for good reason. They expose the gap between the professional image a person projects and the moral reality operating underneath it. Banfield carried a federal badge. He understood evidence collection, chain of custody, and how investigations work.

None of that knowledge protected Christine Banfield or Joseph Ryan. What it may have done is make the plot more sophisticated — and ultimately, more transparent to a jury that could see the planning embedded in every detail. Life without parole is the correct outcome when premeditation is this deliberate and the victims this defenseless.