23-year-old Juliana Peres Magalhaes was employed as an au pair by a Virginia couple Christine and Brendan Banfield in 2003

The alleged scheme saw one of her employers, Christine Banfield, 37, stabbed to death and a BDSM fetishist stranger, Joseph Ryan, shot dead beside her

Joseph Ryan was found shot dead inside the home of the family she worked for in Virginia

The Brazilian au pair has been charged with the murder of Ryan, 39, but no one has been charged in the death of Christine Banfield

At the preliminary hearing Monday, prosecutors alleged that Ryan being killed as part of a convulated scheme to get rid of Christine so Banfield and Peres Magalhaes could be together romantically 

Officials say the au pair and Christine’s husband Brendan were having an affair

On the day Peres Magalhaes claims, she left home on a trip to the zoo with the Banfields four-year-old daughter, but returned shortly after because she had forgotten to grab packed lunches

Noticing a strange car in the driveway she claims, she tried calling Christine, who did not answer, so she called the husband

Arriving quickly at the scene Banfield and the au pair entered the home to find Joseph Ryan hurting Christine

Banfield, a law enforcement officer for the IRS, grabbed his service gun, shot and injured Ryan, he told police

Banfield then ordered Peres Magalhaes to grab another gun and shoot Ryan again., she did as ordered, killing Ryan.

Brazilian au pair Juliana Peres Magalhaes, [photo], 23, is accused of killing a BDSM fetishist as part of a plot with her IRS agent boss to get rid of his wife so they could be together

An au pair has been accused of killing a BDSM fetishist as part of an elaborate plot with her boss to get rid of his wife so they could be together.
Brazil native Juliana Peres Magalhaes, 23, is charged with the murder of Joseph Ryan, 39, who was found shot dead inside the $1million mansion of the family she worked for in Herndon, Virginia.
Homeowner Christine Banfield, 37, was also found fatally stabbed after being attacked in her bedroom in February 2023. No one has been charged in her death.
Peres Magalhaes was employed as an au pair by Christine and Brendan Banfield, an employee of the Internal Revenue Service.
Brendan Banfield and au pair claimed they entered the home to find Joseph Ryan attacking Christine.

Christine Banfield, 37, seen [photo], with her husband and daughter, was also found fatally stabbed at the scene in her home after being attacked in her bedroom in February 2023. Brendan Banfield and the family’s au pair are been investigated for the killing

Banfield, a law enforcement officer for the IRS, grabbed his service gun shot and injured Ryan, according to his police statement, adding that he then ordered Peres Magalhaes to grab another gun and shoot Ryan again. The au pair allegedly did as ordered, killing the intruder.
But in a preliminary hearing on Monday, prosecutors said the evidence points to a different story, suggesting Ryan was gunned down as part of a confusing scheme to get rid of Christine so Brendan and Peres Magalhaes could be together romantically. 

Au pair Juliana Peres Magalhaes and her boss Brendan Banfield were having an affair. Detectives figured when they returned to the home after the killings and found picture frames filled with photos of the now-couple in the bedroom where Christine died – prosecutors

Prosecutors say someone created a fake account for Christine on a BDSM site and made plans to have ‘rough sex’ with Ryan before they were both killed. 
The mom reportedly did not sound like herself in her alleged conversations with Ryan, leading police to believe someone else was pretending to be Christine and set up a meeting at the home on the day of the killings.
According to prosecutors, the au pair and her boss were having an affair, which detectives discovered when they returned to the Banfield home after the killings and found picture frames filled with photos of the now-couple in the bedroom where Christine died. 
Detectives also said they found the au pair’s lingerie around the room, describing her as Brendan’s ‘live-in lover.’

Was he set up? Joseph Ryan, 39, was found shot dead inside the $1million home Brendan Banfield and Peres Magalhaes both admit shooting him – because he was caught attacking Christine. Prosecutors suggest

Questioned about his relationship with Peres Magalhaes in court Monday, Banfield invoked his Fifth Amendment right.
Prosecutors told the court Banfield and the au pair went to a shooting range together months before the alleged home invasion. Furthermore, and that Brendan later returned to buy a gun. The pair is also accused of swapping out their phones for new ones in the days before the killings. 
Peres Magalhaes told police she left the family’s home with the Christine’s four-year-old daughter the morning of the murder to go to the zoo, but returned shortly after because she had forgotten to grab packed lunches.

Prosecutors say someone created a fake account for Christine on a BDSM site. That profile made plans to have ‘rough sex’ with Ryan before they were both killed at the upscale home in Herndon, Virginia, in February 2023

The au pair said she noticed a car she did not recognize in the driveway when she returned, and tried calling Christine, who did not pick up the phone. Her account said that she then called Brendan, who quickly arrived at the scene.
When the pair and the girl entered the home, Brendan reportedly went to the bedroom and found Christine and Ryan in a struggle.
Peres Magalhaes and Brendan Banfield told police Ryan had attacked Christine so Brendan fired his service weapon. They said they had no connection at all to the alleged intruder. 

Detectives also said they found the au pair’s lingerie around the room, describing her as Brendan’s ‘live-in lover’. The fact of a sexual relationship between au pair and her employer has been admitted by Peres Magalhaes’ attorney

Juliana Peres Magalhaes was arrested almost eight months after the double-homicides and charged with second-degree murder for shooting Jonathan Ryan, only. To date, no one has been charged in the death of Christine Banfield. 
The Brazilian’s attorney has admitted that she indeed had a sexual relationship with her boss, Brendan Banfield, however adding that Banfield’s cheating was not exclusive, because the married couple supposedly both were unfaithful to the other.
Fairfax County Police Chief Kevin Davis has said she expects more people to be charged in the murders.