On the morning of February 24, 2023, police responded to a home in Fairfax County, Virginia. Inside, they found 37 year old Christine Banfield critically injured. A man named Joseph Ryan was already dead, shot by Christine’s husband, IRS special agent Brendan Banfield. Brendan told investigators he had interrupted a violent attack and acted in self defense. At first, the explanation appeared straightforward.

That narrative quickly began to unravel. Investigators discovered that Brendan had been involved in a secret relationship with the family’s live in Brazilian au pair, Juliana Peres Magalhaes. Prosecutors later alleged the pair had planned Christine’s killing over several months, using an online account created with Christine’s image to lure Joseph Ryan to the home under false pretenses.

As the investigation expanded, evidence including phone records, online messages, purchases, and changes made inside the home raised serious doubts about Brendan’s account. Juliana eventually accepted a plea agreement and agreed to testify, directly contradicting the self defense claim.

In February 2026, a jury found Brendan Banfield guilty on multiple charges, including aggravated murder and child endangerment. The case, now widely known as the Au Pair Murders, stands as one of the most disturbing family betrayal cases in recent years.

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