Au Pair Affair Trial Of Brendan Banfield: Det. Stephen Augustine Takes The Stand — Expert vs. Expert: Prosecution Brings in Audio/Video Analyst to Counter the Defense
Hidden Killers With Tony Brueski | True Crime News & Commentary
True Crime Today
3.3 • 908 Ratings
🗓️ 29 January 2026
⏱️ 22 minutes
🧾️ Download transcript
Summary
Det. Stephen Augustine, Fairfax Co. Police Dept, testified today in the Brendan Banfield murder trial. Banfield, a former IRS agent, is charged with four counts of aggravated murder in the February 2023 deaths of his wife Christine Banfield and Joseph Ryan at their Herndon, Virginia home.
Prosecutors allege Banfield plotted the killings with the family's Brazilian au pair, Juliana Peres Magalhães, with whom he was having an affair. Magalhães has pleaded guilty to manslaughter and is expected to testify against Banfield. The defense maintains digital evidence does not support the state's catfishing theory.
#BrendanBanfield #AuPairAffair #MurderTrial #TrueCrime #Testimony #ChristineBanfield #JosephRyan #FairfaxCounty #HiddenKillers #Breaking
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Transcript
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| 0:00.0 | You're listening to the Aupair Affair Murder Trial of Branton Vanfield from True Crime Today on the Hidden Killers podcast. |
| 0:08.0 | Now, back to the courtroom. |
| 0:11.0 | Almost rebuttal evidence. |
| 0:28.8 | Thank you. Your Honor, the Commonwealth would call Detective Stephen Augustine. |
| 0:31.8 | All right. Detective Augustine? |
| 0:38.3 | Based on the face, found cook, raise your ring that. You swear or affirm to testify truthfully in this case under penalty of law. |
| 0:42.3 | Thank you. |
| 0:43.3 | Thank you. |
| 0:44.3 | Good afternoon. |
| 0:57.0 | How are you? |
| 0:59.0 | Good. |
| 1:00.0 | Can you please state and spell your name for the court record? |
| 1:03.0 | The short, Detective Steven Augustine, this S-T-E-P-H-E-N-A-U-G-U-S-T-I-N-E. |
| 1:13.3 | Thank you, Detective Augustine. |
| 1:14.9 | And can you tell us what it is you do |
| 1:17.6 | for Fairfax County Police Department? |
| 1:19.9 | I've got a law enforcement officer |
| 1:21.5 | for 24 years, the last 20 of which |
| 1:24.1 | I've been with the Fairfax County Police Department, |
| 1:27.0 | the last 12 years of I've been a detective, |
| 1:31.0 | the technical investigations unit, forensic audio and video section. Can you tell me about your |
| 1:38.1 | training and education that led you to forensic audio analysis? Sure. |
... |
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