Brendan Banfield Case: The Au Pair, The Affair, and The Audacity
He Used Her Own Laptop.
A Love Story.
The Brendan Banfield case: a federal IRS agent who allegedly wanted out of his marriage, a Brazilian au pair, a fetish website, and a plan so elaborately arrogant that a jury needed less than nine hours to see straight through it.
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The morning was unremarkable the way all mornings are, right up until they aren't. Frost still clung to the lawns of the kind of Northern Virginia suburb where people have Ring cameras and 401(k)s and strong feelings about their HOA. The houses were large and sensible. The cars were large and sensible. The secrets were not.
Inside the Banfield home on that particular Friday, a four-year-old girl was in the basement, dressed and ready, waiting to go to the zoo.
She would not go to the zoo.
By the time police arrived, there were two bodies in the primary bedroom. A woman, stabbed multiple times. A man, shot. And kneeling over the woman, his hand pressed to her neck in a gesture that read, in the chaos, as grief — was her husband.
He had, he told 911, come home to find a stranger attacking his wife. He had shot the intruder. He was devastated. He was innocent. He was, as it would turn out, an IRS criminal investigator with a government-issued firearm, a Brazilian au pair, and an active account on FetLife.com.
This is a story about the audacity of a very stupid plan.
The Brendan Banfield Case: An Affair, A Scheme, and a Fetish Website That Did Not Cooperate
Let us be precise about what Brendan Banfield allegedly did not want: a divorce. Because divorces, as he reportedly explained to his au pair, Juliana Peres Magalhães, cost money. And Christine Banfield — his wife of nearly eleven years — would get more of it than him.
Let us also be precise about what he did want: to marry the au pair. The live-in au pair. Who was caring for their four-year-old daughter. In the house. That Christine owned.
Brendan and Christine had hired Juliana Peres Magalhães in October 2021, when their daughter was three. She moved into the family home in Herndon, Virginia — a quiet, ordinary suburb of Washington D.C. — as a full-time caregiver. By August 2022, according to Juliana's testimony, she and Brendan had begun a romantic relationship. Brendan would later claim on the stand that Juliana had come onto him while Christine and their daughter were out of town. Juliana's account was somewhat different. The jury, ultimately, did not spend a great deal of time sorting out who made the first move, because the move that mattered came two months later.
The audacity of wanting your wife dead so you don't have to pay alimony is already a lot. But wanting to marry the woman who watched your child while you planned your wife's murder? That's not a crime of passion. That's a project.
In October 2022, Brendan told Juliana he wanted to get rid of Christine. He said he wanted to marry Juliana and have children with her. He did not want a divorce because Christine would walk away with more money than him, and he wanted custody of their daughter. Juliana testified that her first reaction was that he was joking. He was not joking. He was, in fact, a federal IRS criminal investigator who apparently believed that his professional expertise in detecting fraud made him uniquely qualified to commit it.
Reader, it did not.
The plan that eventually took shape over the following months: create a fake profile posing as Christine on a sexual fetish website. Use her laptop. Use her photo — a bathing suit selfie she had sent Brendan on Facebook, which they downloaded, edited, and repurposed. Catfish a stranger into coming to the house believing he was there for a consensual encounter. Then have that stranger be framed for Christine's murder once Brendan killed her. The stranger, having arrived armed at the invitation of a fake profile, would look guilty. Brendan, the grieving husband who shot the intruder, would look heroic. Juliana, the au pair who witnessed everything, would keep quiet.
Every single part of this plan left a paper trail. A digital trail. A geolocation trail. A receipt trail. Brendan Banfield investigated financial crimes for the federal government and apparently believed none of this would matter.
The profile name: "Anastasia" — a woman Christine was not
The photo used: Christine's own bathing suit selfie, downloaded from Facebook and edited
The target: Joseph Ryan, 39, a complete stranger who communicated with the fake profile and believed he was meeting a real person for a consensual fantasy involving a knife, chains, and rope
The laptop: Christine's. Her own. Because why use your own?
The detail that matters: On the same day the "Anastasia" FetLife account was created, Christine's photo was edited and uploaded — from her device.
Joseph Ryan had no idea any of this was happening. He was a 39-year-old man who had found a profile called "Anastasia" on FetLife.com and begun a conversation with someone he believed was a woman named Christine. They communicated back and forth over weeks, building out a scenario together. The profile described a rape fantasy involving a knife, chains, and rope. Ryan was told to bring those items. He was given an address. He showed up on the morning of February 24th, 2023, to what he believed was a consensual encounter with a consenting adult.
He was, in reality, the final piece of a murder plot that had been months in the making. He was armed because two people who planned to kill him had told him to be armed. He was there because they had invited him there. He walked through the door of the Banfield home and never walked back out.
"At first, I thought he was joking."
— Juliana Peres Magalhães, on Brendan Banfield's first suggestion to kill his wifeTwo Federal Crimes Walk Into a Bedroom
What happened inside the Banfields' primary bedroom on February 24th is not funny. What happened after it — the staggering confidence with which Brendan Banfield believed this would work — is something else entirely.
According to prosecutors and Juliana's testimony, Brendan stabbed Christine. Juliana testified she watched him get on top of his wife and stab her with a knife. Christine was stabbed seven times in the neck. Ryan, who had arrived as the designated fall guy and found himself in the middle of an actual murder, was shot. By Juliana. And then by Brendan too, with his government-issued IRS firearm. The man was shot by two different guns. There was a forensics team coming eventually, and they do, in fact, test for these things.
Brendan then called 911. Told them a stranger had attacked his wife and he had responded. The stranger being, of course, the stranger he had personally recruited, catfished, armed, choreographed, and lured to his specific home address. This is the part where we remind you that Brendan Banfield's entire career was built on following money, evidence, and digital trails to catch people who thought they were being clever.
He investigated financial crimes professionally. He then committed the most papery, trail-leaving, evidence-having crime imaginable. On his wife's laptop. With his phone's geolocation on. While conducting a months-long fetish website correspondence. From his house. Where he lived. With his government gun. Baby, what?
Investigators found inconsistencies almost immediately. The geolocation data from Brendan and Juliana's phones placed them together at a gym on the evening of February 20th — four days before the murders — between 9 and 11pm, when the FetLife correspondence was also active. The digital forensics told a story that Brendan's version of events could not explain. Detectives who raised doubts about the official narrative were reportedly removed from the case — a detail that surfaced during trial through the defense — but the evidence had already accumulated faster than anyone could suppress it.
Detectives were not fully convinced by the "grieving husband" presentation within approximately the length of time it takes to pull a browser history. The affair was uncovered quickly. An evidence photo taken in October 2023 — eight months after the murders — showed a framed photo of Brendan and Juliana on the nightstand of the master bedroom. The bedroom where Christine had died. They had been living there together.
Juliana Peres Magalhães was charged with murder in October 2023, then made the considerably smarter decision to plead guilty to involuntary manslaughter and testify against the man who had talked her into this in the first place. She was 23 years old when the murders happened. She had come to the United States from Brazil to care for a child, and she ended up a participant in that child's mother's murder. The judge at her sentencing was not moved by the circumstances. "Your actions were deliberate, self-serving, and demonstrated a profound disregard for human life," Fairfax County Judge Penney Azcarate told her, before handing down the maximum sentence of 10 years. Juliana was 25 at sentencing. She prayed for forgiveness from the victims' families. She said there was nothing she could do to make it up to them. She was right.
Thirty-Four Witnesses. One Defendant Who Took the Stand.
The trial ran three weeks in January 2026, three years after the murders. Thirty-four witnesses took the stand. The two who captivated the courtroom were Juliana — who on day one walked the jury through every detail of the catfishing scheme, the choreography of the killings, and the exact moment she saw Brendan get on top of Christine with a knife — and Brendan himself, who eventually took the stand and described a marriage that "worked for us."
Brendan's defense leaned heavily on the theory that Christine had actually created the FetLife profile herself — that she had been the one conducting the catfish correspondence, staging the encounter with Ryan as a consensual fantasy, and that her death was a tragic accident rather than a murder. The defense hired a digital forensics expert who testified that Christine's device usage patterns showed no significant gaps that would have allowed someone else to operate her laptop without her knowledge. He noted she had taken a selfie on January 17, 2023 — the same day the "Anastasia" account was opened — and that the same photo appeared on the profile. The implication being that Christine made it herself.
The defense theory was that Christine Banfield, a pediatric ICU nurse and mother of a four-year-old, secretly created a fetish website profile using her own photo, choreographed a violent rape fantasy with a stranger, invited him to her house, and was accidentally killed in the process — all while her husband happened to be having an affair with the au pair and had told said au pair he wanted Christine dead. The jury deliberated for under nine hours. I'm going to go ahead and let that marinate.
Brendan took the stand and admitted to the affair with Juliana. He admitted to affairs with other women as well — which is genuinely a choice to disclose on the stand when you are already on trial for murdering your wife. He maintained that Christine's death was not his doing. He described her as "a caring mother, a caring wife, a loving nurse." He then said he was not responsible for her death. He said their marriage worked. The jury deliberated for under nine hours.
They found him guilty on all counts: two counts of aggravated murder, one count of using a firearm in committing a felony, and child endangerment. That last charge — for the daughter in the basement waiting to go to the zoo — carried a particular weight in the room.
At sentencing, Brendan told the court: "I'm greatly disappointed in the legal system. The system has failed not only me, but also Christine." He then said he did not commit the crime. He said this. Out loud. In front of the judge. After being convicted by a jury. After Juliana testified in detail. After his wife's own bathing suit photo was entered into evidence as the catfish bait. After the geolocation data. After the framed photo on the nightstand. Truly the confidence of a man who has never once been told no and cannot begin to process the concept.
Brendan Banfield was sentenced to life in prison without the possibility of parole on June 5, 2026. He has indicated he plans to appeal. He is 40 years old. He will have considerable time to think about the laptop.
For more on cases where confidence and competence parted ways completely, see our full account of Sarah Boone, and our coverage of Mackenzie Shirilla's parents and how they're talking about their daughter now.
For Christine Banfield
Christine Banfield was 37 years old. She was a pediatric intensive care unit nurse — which is to say she was someone who chose, professionally, to be with the smallest and most fragile patients in the hospital, in the hardest moments of their young lives. She was a mother. She had a four-year-old daughter who was in the basement getting ready for the zoo on the morning she died.
She did not know what was coming. She did not deserve what came. She was betrayed by her husband in a way that goes beyond ordinary cruelty — not just killed, but used. Her name. Her photograph. Her laptop. Her home. All of it weaponized against her by the man who had promised to protect her.
What the last moments of Christine's life looked like, we will not say here. We know enough to know it was terrifying and unjust. We know enough to know she deserved thirty more years of ordinary mornings — the kind with coffee and school drop-offs and a daughter who grew up knowing her mother.
Her sister spoke at sentencing. Her voice carried what no verdict can resolve. We are thinking of Christine and of that daughter, who will carry this for the rest of her life through no fault of her own.
Rest, Christine. You were robbed of so much. You are not forgotten.
For Joseph Ryan
Joseph Ryan was 39 years old. He was not connected to the Banfields. He did not know Christine. He did not know Brendan. He responded to a profile that was not real, in pursuit of a fantasy that was entirely fabricated, and he was killed for it.
The plan required him to be the villain. It required that he arrive at that house looking guilty — armed with the props of a script that had been written for him by people who intended all along for him to take the blame. He walked in as a pawn in someone else's story and never walked out.
His mother and his aunt spoke at sentencing. We can only imagine what they said, because no words should have to be prepared for a loss like this — a son gone not by any real circumstance of his life, but by the calculated cruelty of strangers who saw in him nothing but a convenient fall guy.
Joseph Ryan deserved to drive home that morning. He deserved to have the rest of his life. He was failed by the two people who had planned every detail of that failure in advance.
We are sorry, Joseph. You were an innocent man. That matters.
Brendan Banfield is currently serving a mandatory life sentence at an undisclosed facility in Virginia. His appeal, if filed, will be reviewed by a court that presumably also has access to browser histories.
Brewtiful Living · Culture · June 2026