Brendan Banfield found guilty of killing his wife and a stranger in a disturbing scheme with his nanny-turned-lover.

Brendan Banfield Found Guilty of Murder

Brendan Banfield, a former IRS special agent, was convicted on Friday for the murder of a man who sought a sexual encounter with his wife. Prosecutors claimed that Banfield lured the victim to their home in suburban Washington, D.C., as part of a complex scheme involving his Brazilian nanny, who also became his mistress.

The 40-year-old, who had previously worked for the federal government, was found guilty in Fairfax, Virginia, not only for the murder of his wife Christine, aged 37, but also of Joseph Ryan, 38. They alleged that Ryan arrived at Banfield’s residence on February 24, 2023, under the impression he was meeting Christine for a sexual encounter.

In addition to murder, Banfield was convicted for using a weapon and for endangering his then 4-year-old daughter by leaving her in the basement while the violence occurred. The jury, composed of seven women and five men, reached their decision after nine hours of deliberation.

Banfield now faces life imprisonment without the chance for parole at his upcoming sentencing.

Throughout the harrowing three-week trial, jurors heard testimonies from Banfield’s nanny, Juliana Pérez Magalhães, 25, and from Banfield himself, who notably chose to testify in his defense.

Magalhães, who accepted a plea deal, revealed that they started plotting to kill Christine shortly after she became romantically involved with Banfield. The pair created a fetish account that attracted Ryan, promising to help fulfill Christine’s fantasies, according to her testimony.

Magalhães claimed that Ryan arrived armed with a knife and engaged in sex with Christine, who had previously worked as a nurse for sexual assault victims.

While Banfield rushed home upon receiving a call from Magalhães, who claimed there was an intruder, prosecutors suggested this was all part of an elaborate ruse. He left their daughter alone in the basement during the chaos that ensued upstairs.

Magalhães testified that Banfield shot Ryan to create the illusion of heroism in defending his wife, subsequently stabbing Christine multiple times and attempting to stage the scene as if Ryan was the assailant.

Banfield acknowledged his affair with the nanny, admitting he had previously cheated and suggesting that Christine had also been unfaithful and had BDSM interests.

He argued in court that he shot Ryan out of a desire to protect Christine and rejected the notion that this was a premeditated act.

In closing statements, Banfield’s attorney, John Carroll, argued that Magalhães fabricated the story to protect herself and escape punishment. “Juliana made it up,” he insisted, asserting that her testimony was motivated by a desire for notoriety.

Conversely, prosecutor Jenna Sands presented substantial evidence against Banfield, highlighting that he was deeply in love with Magalhães and suggested he felt compelled to eliminate his wife to pursue a future with her.