A body camera shows the version of events in the double homicide in Reston

RESTON, Va. (7News) — 7News obtained the body camera video Au pair Juliana Pérez Magalhas That day, she told police that she and her boss, Brendan Banfield, lured the man to their home as part of a plot to kill Brendan’s wife in February 2023, prosecutors said.

Both Christine Benfield and the man who came to the house that day, Joseph Ryan of Springfield, were killed.

Prosecutors believe Brendan and Magalhaes used a fetish website to get Ryan to come to the house for what he believed would be sexual contact with Christine.

READ|Fairfax homeboy pleads guilty to manslaughter in Reston double homicide

Brendan and Magalhaes then allegedly shot and killed Ryan, while Brendan allegedly stabbed his wife to death. But the story Magalhaes told Fairfax County police on the day of the crime — Feb. 24, 2023 — was different from what prosecutors say happened. In the body camera video, she told the officer that she and Brendan intervened when they saw Ryan stab Christine.

“And he said, ‘I’ll kill her, I’ll kill her.’ And he started stabbing her. I think Brendan shot him and he asked me for help, I shot him too,” Magallias told the officer.

Magalhaes pleaded guilty to involuntary manslaughter Tuesday in Fairfax County District Court.

Because Magalhaes is now cooperating with the Commonwealth’s Attorney’s Office, she agreed to recommend that she be released without further time after Brendan Benfield’s trial. This trial is currently scheduled to begin on February 3.