Nanny's accomplice in double murder calls her employer her “husband” in police footage.

Juliana Peres Magalhães, the nanny of a suburban Virginia family who pleaded guilty to manslaughter in a double murder case last month, is seen hyperventilating in new body camera footage from Fairfax County police.

Magalhães, a Brazilian citizen, apparently fell in love with her employer, former IRS agent Brendan Banfield, and the couple was accused of orchestrating a complex plot to murder Banfield's wife, Christine Banfield, the mother of his four-year-old daughter. in February 2023.

The alleged scheme also killed a man named Joe Ryan after prosecutors said he was contacted through a sex fetish website and lured to the Banfields' home with the promise of sex.

In the video from February 2023, Magalhães can be heard telling police that her “husband” was downstairs.

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“He started stabbing her,” Magalhães told police in the video, referring to Ryan. “I think Brendan shot him and he asked me [for] Help shoot him. … I’ve never seen him before.”

She was 22 when police first arrested her in October 2023, about eight months after the murders, when authorities charged her with aggravated murder and using a weapon in the commission of a felony.

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Brendan Banfield is charged with four counts of aggravated murder and using a weapon in the commission of a felony. (Fairfax County Police Department)

At the time of her arrest, she had moved into the master bedroom of the Banfields' Herndon home, with a photo of herself and Brendan together on a nightstand next to the bed, authorities said.

Fairfax County police arrested Banfield, a 39-year-old IRS employee, in September, more than a year after the murders. He is charged with four counts of aggravated murder and using a weapon in the commission of a felony.

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This image provided by the Fairfax County Police Department and taken on October 13, 2023 was submitted as evidence in the murder case against Brendan Banfield. It features a framed photo of Banfield and Juliana Peres Magalhães on his bedside table in Herndon, Virginia. (Fairfax County Police Department via AP)

According to FOX 5, Banfield faces a life sentence for the alleged crimes, while Magalhães faces a maximum sentence of 10 years for manslaughter.

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When police responded to a 911 call from the Banfield residence on February 24, 2023, they found Christine with stab wounds to the neck and Ryan with fatal gunshot wounds in the upstairs bedroom of the home. Authorities took Christine to the hospital, where she was later pronounced dead.

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

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Officers recovered a knife and two guns from the home.

It remains unclear exactly what happened in the house that Friday morning, but Magalhães and Brendan both apparently admitted to shooting Ryan while the man held a knife at Christine.

Magalhães is charged with second-degree murder and use of a deadly weapon in the commission of a felony. (Instagram)

Viviane Magalhães, Juliana's stepmother, told The Associated Press she hopes her stepdaughter can return to Brazil soon.

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“We still can’t figure it out. I think she was deceived by this guy. He brainwashed her,” Viviane Magalhães told the AP in Portuguese, referring to Banfield. “She was never a gold digger in Brazil. For many years she was with a man as humble as she was. We could never have imagined that she would live in such a situation.”

Banfield is no longer employed by the IRS.

The Associated Press contributed to this report.