A mansion murder mystery has shaken an affluent Virginia suburb, with a nanny set to go on trial.

In November, Juliana Peres Magalhaes will be tried in Fairfax County, Virginia, for second-degree murder.

A mansion murder mystery has shaken an affluent Virginia suburb, with a nanny set to go on trial.
A mansion murder mystery has shaken an affluent Virginia suburb, with a nanny set to go on trial.

A peaceful Virginia community. A typical family of three. A Brazilian caregiver. A tragic double homicide.

The investigation into the murder of Christine Banfield, a wife, mother, and Fairfax County NICU employee, and Joseph Ryan, the 38-year-old man who arrived at her home with a knife, in Herndon, Virginia, in February 2023, is ongoing.

Juliana Peres Magalhaes, a 23-year-old au pair from Brazil, is set to be tried for second-degree murder and the use of a deadly weapon in the commission of a crime that led to Ryan's death.

Authorities have not filed any charges in connection with Banfield's death.

Juliana Peres Magalhaes mugshot
Juliana Peres Magalhaes was charged nearly eight months after she fatally shot Joseph Ryan – the man had just stabbed her affair partner's wife to death. (Fairfax County Police)

The initial crime

On February 24, 2023, the mystery started when Magalhaes informed police that she left Christine and husband Brendan Banfield's home in the 13200 block of Stable Brook Way in Herndon to take their daughter to the National Zoo. She stated that she had started driving but realized she forgot the lunches she packed for their outing, so she turned around and noticed an unknown car in the driveway.

The Washington Post reported that she called Brendan, a former criminal investigative agent for the IRS who had left for work, and informed him about the mysterious car in their driveway. The pair decided to meet at the Banfields' home and walk inside together.

Juliana Peres Magalhaes
Magalhaes is charged with second-degree murder and use of a deadly weapon during the commission of a crime. (Instagram)

Brendan and Magalhaes entered the house and saw an unknown man, Ryan, holding Christine at knifepoint. Ryan was fully clothed while Christine was naked in the main bedroom. Magalhaes described Ryan as an intruder.

The details of what happened inside the home on that Friday morning are still unclear, but it is known that Magalhaes and Brendan both confessed to shooting Ryan while he was holding a knife to Christine. Ryan tragically lost his life in the incident, while Christine sustained stab wounds to the neck and ultimately passed away in the hospital.

Christine Banfield
Christine Banfield was stabbed to death in the bedroom of her Fairfax County, Virginia, home. (Facebook)

The Fairfax County police launched an investigation after someone inside the home made a 911 call that morning.

"This is evolving and changing. This is very dynamic." — Fairfax County Police Department Chief Kevin Davis

During the press conference, Fairfax County Police Department Chief Kevin Davis stated that there were no additional suspects in the case other than the four adults present in the home at the time of the double homicide. Additionally, he mentioned that there were no signs of forced entry and that all individuals inside the home were acquainted with one another.

13200 block of Stable Brook Way in Herndon
Fairfax County police responded to the double homicide in the 13200 block of Stable Brook Way in Herndon, Va., on Feb. 24, 2023. (FOX 5 DC)

At the time of the murder, the police chief stated that the Banfields' daughter was present in the home.

Investigation revelations

The investigation into the double murder led Fairfax authorities to discover intricate details about the four suspects.

Court documents allege that Magalhaes and Brendan were having an affair, which was unknown to Christine. The pair went to a shooting range just weeks before the double murder, according to the Post.

The Post reported that prosecutors claimed a computer at the Banfield home was linked to an account on a sexual fetish website.

Fairfax Co. Police Chief Davis
"This is evolving and changing. This is very dynamic," Fairfax County Police Department Chief Kevin Davis said at the time, adding that there were no additional suspects in the case other than the four adults who were inside the home at the time of the double homicide. (Facebook)

The photo of Christine in a bathing suit on the computer account was unclear as to who was communicating on it. Additionally, the profile did not provide any evidence that she was into knife play, binding, or BDSM, prosecutor Eric Clingan stated in court, according to the Post.

The man who held Christine at knifepoint, Ryan, also had an account on the website and had been communicating with whoever was accessing the site from the Banfield computer.

In November 2023, a grand jury indicted Magalhaes, who had been living in the Banfields' main bedroom since October 2023, and her trial is scheduled to take place in November.

Framed photo of Brendan Banfield and Juliana Magalhaes
A framed photo of Brendan Banfield and Juliana Magalhaes and the mistress's lingerie were found in the room where the double homicide occurred, according to prosecutors. (Fairfax County Commonwealth Attorney's Office)

Ryan Campbell, Brendan's attorney, stated that Brendan shot at Ryan first while holding a knife to his wife's neck. Afterwards, Brendan requested that Ryan retrieve another gun from the closet of the main bedroom. According to the Post, Magalhaes fired at Ryan because she believed he posed a threat to her employers.

"You have a stranger in the house and a dying woman." — Attorney Ryan Campbell

In court, Campbell stated that Mr. Banfield, a law enforcement officer, shot the individual once, according to the Post. The attorney did not respond to a request for comment from Planet Chronicle Digital.

The Banfield home in February 2023
Authorities eventually arrested Magalhaes in October 2023. (FOX 5 DC)

Magalhaes' mother maintains that her daughter is not guilty.

Marina Peres Souza, in an interview with the Washington Post, stated that she prays for the prosecutors and judge to comprehend that Juliana is not guilty in this case.

In a June email to her mother, Magalhaes expressed her unhappiness and desire to leave the current situation, stating, "I am tired of this place and nothing makes me happy. I just want to go back home and be with you guys."

The IRS confirmed to Planet Chronicle Digital on Thursday that Brendan is no longer employed by the agency. During a preliminary hearing in April, he invoked his right to the Fifth Amendment in response to questions about his alleged ties to the case.

by Audrey Conklin

us

The Navy is readying for a potential conflict with China by unveiling a new strategy.

The Navy is readying for a potential conflict with China by unveiling a new strategy.

us
An artist who supports Trump dismantles his backing for the Republican candidate in just 31 seconds.

An artist who supports Trump dismantles his backing for the Republican candidate in just 31 seconds.

us
Trump golf course vulnerabilities exposed by whistleblower prompt Hawley to demand Secret Service action.

Trump golf course vulnerabilities exposed by whistleblower prompt Hawley to demand Secret Service action.

us
An Alaskan man was apprehended for making threats against six Supreme Court justices.

An Alaskan man was apprehended for making threats against six Supreme Court justices.

us
Houston home invaders pose as DoorDash, kidnap mom in front of children before shootout with police.

Houston home invaders pose as DoorDash, kidnap mom in front of children before shootout with police.

us
A would-be Miami Corvette thief becomes trapped in the car and pleads the owner for assistance.

A would-be Miami Corvette thief becomes trapped in the car and pleads the owner for assistance.

us
Golf course assassination suspect's location revealed in video.

Golf course assassination suspect's location revealed in video.

us
A former CIA officer who drugged and sexually assaulted dozens of women in various countries is sentenced to 30 years in prison.

A former CIA officer who drugged and sexually assaulted dozens of women in various countries is sentenced to 30 years in prison.

us
A man of integrity, 95 years old, was killed in a car crash while on his way to meet friends.

A man of integrity, 95 years old, was killed in a car crash while on his way to meet friends.

us
A young boy saves his father from a black bear attack using a rifle: 'A hero'

A young boy saves his father from a black bear attack using a rifle: 'A hero'

us
FBI's Ryan Routh tip in Trump assassination attempt highlights the challenge of vetting demand, says former agent.

FBI's Ryan Routh tip in Trump assassination attempt highlights the challenge of vetting demand, says former agent.

us
Joyride suspects crash New York City subway train and flee: police

Joyride suspects crash New York City subway train and flee: police

us
Texas prosecutors seek information from Google on suspects in Jocelyn Nungaray murder case.

Texas prosecutors seek information from Google on suspects in Jocelyn Nungaray murder case.

us
At a Trump rally, police officers call for the death penalty for cop killers while being followed closely.

At a Trump rally, police officers call for the death penalty for cop killers while being followed closely.

us
Trump encounters young admirer with unusual brain condition behind the scenes at rally.

Trump encounters young admirer with unusual brain condition behind the scenes at rally.

us
A year ago, a report indicated that an illegal migrant involved in a Times Square police attack was ordered to be deported.

A year ago, a report indicated that an illegal migrant involved in a Times Square police attack was ordered to be deported.

us