A husband having an affair with his Brazilian au pair is going on trial for an ‘elaborate double-murder scheme’ to frame another man in the killing of his wife.
Brendan Banfield is charged with aggravated murder of his wife Christineand stranger Joseph Ryan at the Banfields’ $1million home in northern Virginia.
He has pleaded not guilty to the charges but will appear in court on Monday.
Banfield and Juliana Peres Magalhães, the family’s au pair, were with the wife and Ryan on the morning the victims were killed in the primary bedroom of the Banfield home, court records say.
Banfield and Magalhães told officials they saw Ryan, a stranger, stabbing the wife after he entered the house.
(Picture: Derek Reed)
Then they each shot the intruder, Banfield and Magalhães claimed at the time.
But prosecutors have painted a different picture, arguing that Brendan Banfield and Magalhães lured Ryan to the house and staged it to look like he and the au pair shot a predator in defence.
Officials have said Banfield and Magalhães had a romantic affair beginning the year before the killings.
Both the au pair and husband were arrested and initially handed murder charges in the case.
In 2024, Magalhães pleaded guilty to a downgraded manslaughter charge after giving a statement to officials confirming parts of their theory.
In that statement, Magalhães said she and Brendan Banfield created an account in his wife’s name on a social media platform for people interested in sexual fetishes.
There, Ryan connected with the account in Christine Banfield’s name, and the users made plans to meet on the morning of February 24, 2023, for a sexual encounter that would involve a knife, authorities said based on the statement from Magalhães.
Prosecutor Eric Clingan said last year that the au pair’s statement helped the state solidify its theory ahead of trial.
‘With 12 different homicide detectives, there were 24 different theories,’ Clingan said. ‘Now, one theory.’
Not all officials investigating the case have believed Banfield and Magalhães catfished Ryan.
Brendan Miller, a former digital forensic examiner with the Fairfax County Police Department, testified last year that he analysed dozens of devices and concluded Christine Banfield had connected with Ryan herself through the social networking platform.
An evidence analysis team at the University of Alabama peer-reviewed and affirmed Miller’s digital forensic findings, according to evidence submitted to the court.
Miller was transferred out of the department’s digital forensics unit in late 2024, though a former Fairfax County commander testified the reassignment was not punitive or disciplinary.
John Carroll, Banfield’s attorney, argued that Millers’ transfer was directly tethered to the case. He also said in court that Fairfax County police reassigned the case’s lead detective after that man had pushed back on the top brass’ catfishing theory.
‘It is a theory in search of facts rather than a series of facts supporting a theory,’ Carroll said.
Banfield, whose daughter was at the house on the morning of the killings, is also charged with child abuse and felony child cruelty in connection with the case.
He will also face those charges during the aggravated murder trial.
