Former IRS Agent Brendan Banfield Sentenced to Life for Murdering Wife and Fetish-Site Lure

Brendan Banfield, a 41-year-old former IRS criminal division agent from Herndon, Virginia, was sentenced Friday to life in prison without parole for the 2023 murders of his wife Christine Banfield and a stranger named Joseph Ryan. Fairfax County Circuit Court Judge Penney Azcarate called the sentence harsh but justified. Banfield had been convicted on February 2 on two counts of aggravated murder, plus firearm and child endangerment charges — under Virginia law, aggravated murder carries only one possible punishment: life.

The case hinged on a deeply calculated scheme. Prosecutors argued Banfield, working with his au pair lover Juliana Peres Magalhães, a 26-year-old Brazilian national, posed as his wife on a fetish website to lure Ryan, 38, to the family home. Ryan believed he had been invited by Christine Banfield to participate in a consensual violent sexual role-play scenario. Once Ryan entered the bedroom where Christine was alone, Banfield allegedly followed, shot Ryan with a pistol, then stabbed his wife — staging the scene to look like he had heroically intervened.

Magalhães, who pleaded guilty to manslaughter in 2024, testified against Banfield at trial. In her plea, she admitted to shooting Ryan but insisted Banfield orchestrated the entire plan. Judge Azcarate sentenced her to 10 years — the statutory maximum for manslaughter in Virginia — in February, going well beyond what both prosecutors and defense attorneys had recommended. Banfield's defense team argued Magalhães had been pressured into cooperating and that the case against him lacked concrete physical evidence.

Banfield took the stand in his own defense in late January, flatly denying Magalhães's account and declaring her claims "absolutely crazy." At Friday's sentencing, he again insisted on his innocence, telling the court he loved his wife and that exculpatory evidence had been unfairly dismissed. The case drew international media coverage throughout the trial.