Au Pair Affair Trial Of Brendan Banfield: Lt. David Giaccio Takes The Stand — Giaccio Testifies on Juliana Peres Magalhães' Proffer
Hidden Killers With Tony Brueski | True Crime News & Commentary
True Crime Today
3.3 • 907 Ratings
🗓️ 22 January 2026
⏱️ 112 minutes
🧾️ Download transcript
Summary
Lt. David Giaccio, Fairfax Police Department, 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 Auper Affair Murder Trial of Branton Vanfield from True Crying |
| 0:05.3 | Today on the Hidden Killers podcast. Now, back to the courtroom. |
| 0:14.0 | Good afternoon, sir. |
| 0:19.9 | Do you please state your name and spell your name for the court reporter? |
| 0:23.8 | Lieutenant David Giacio, G-I-A-C-C-I-O. |
| 0:27.4 | And where are you currently stationed? |
| 0:29.5 | The Sully District Station. |
| 0:30.9 | Okay. |
| 0:31.8 | And where were you prior to the Sully District Station? |
| 0:35.3 | The Homicide Unit. |
| 0:36.3 | Okay. |
| 0:36.8 | And you were lieutenant there? Yes. Was that under, at one point, Deputy Chief Bruch? Yes. Okay. Or actually during the entire time you were there was under... During the entirety of the time I was there. Because he transferred as well, correct? I'm sorry. Because he had transferred around the same time you did. Yeah, I think about a month before I arrived. He was there. Okay. I am going to ask you to identify what has been marked and introduced as defense exhibit 88. It's just been marked, not introduced, but... Oh, sorry. I thought 88 was. |
| 1:10.9 | Oh, 88 is. |
| 1:11.4 | You're right. |
| 1:11.9 | 88 is. |
| 1:12.5 | You're right. |
| 1:13.8 | Do you recognize that? |
| 1:18.4 | It's an email. |
| 1:20.0 | Okay. |
| 1:20.9 | And what's your role in this email? |
| 1:34.0 | Um... What's your role in this email? Without context, it's hard to say. |
| 1:37.0 | I think it has to do with an executive summary that I was having Detective Miller review. |
... |
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