By Eric Levenson, CNN
(CNN) — Nearly eight months after Brendan Banfield’s wife and a stranger were killed in the Banfields’ Virginia home in February 2023, police returned to the scene of the killings.
They entered the home and went to the bedroom where Christine Banfield was fatally stabbed. There, on the bedside table, investigators found a framed photo of Brendan smiling with another woman – the family’s au pair, according to court records.
Brendan Banfield now faces a double-murder trial, with jury selection scheduled Monday, as prosecutors allege he plotted with the au pair to kill his wife and another man. Prosecutors say that man had been lured to the home to frame him for Christine’s death – and to make his own killing appear to be an act of self-defense.
Banfield – a former IRS agent, according to CNN affiliate WUSA – has pleaded not guilty to aggravated murder and a firearm offense in the fatal stabbing of his wife and the fatal shooting of Joseph Ryan.
Prosecutors say Brendan Banfield and the family’s Brazilian au pair, Juliana Peres Magalhães, were having an extra-marital affair and carried out the plan together. The salacious plot features allegations of BDSM sexual role play, trips to the gun range and false 911 calls, all in an attempt to kill Banfield’s wife and frame Ryan, according to prosecutors.
Peres Magalhães was initially charged with murder and has since pleaded guilty to a lesser count of involuntary manslaughter for fatally shooting Ryan.
She has agreed to cooperate with prosecutors in exchange for a recommendation that she be sentenced to time served, according to the plea agreement. She is likely to be the star witness in Banfield’s murder trial.
The trial is expected to last about four weeks.
Banfield has been held without bond since his arrest, according to police. He faces up to life in prison on the murder charges.
Salacious allegations to face jury
The case began with calls to 911 from within the Banfields’ Herndon, Virginia, home on February 24, 2023. In one call, Banfield told dispatchers he’d shot a man who stabbed his wife, according to police. There was no forced entry at the home.
In an upstairs bedroom, police found Christine Banfield, 37, with stab wounds and Ryan, 39, dead of gunshot wounds nearby. She was taken to a hospital and later pronounced dead, according to Fairfax County Police Chief Kevin Davis.
Peres Magalhães, 25, was arrested and charged with second-degree murder and a firearm offense in October 2023 and has been in custody since her arrest.
When police searched the home, they found a framed photo of Banfield and Peres Magalhães smiling together on his bedside table.
A year later, in October 2024, court records show Peres Magalhães pleaded guilty to involuntary manslaughter. At a plea hearing, prosecutors read aloud a statement laying out the key allegations in the case.
As they alleged, Peres Magalhães began working as an au pair for the couple in late 2021, and in August 2022 she and Brendan Banfield began an extra-marital relationship.
“In the fall of 2022, Brendan Banfield expressed to Peres Magalhães his desire to be rid of his wife and soon thereafter began planning to kill his wife as well as