Au Pair Affair Trial Of Brendan Banfield: Iris Dalley-Graff, Takes The Stand — Forensics Analyst Breaks Down Blood Stains from Crime Scene
Hidden Killers With Tony Brueski | True Crime News & Commentary
True Crime Today
3.3 • 909 Ratings
🗓️ 20 January 2026
⏱️ 115 minutes
🧾️ Download transcript
Summary
Iris Dalley-Graff, Forensics Analyst, 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 A-Pair Affair Murder Trial of Bratton Vanfield from True Crime today on the Hidden Killers podcast. |
| 0:08.0 | Now, back to the courtroom. |
| 0:10.7 | All right. Good morning, ma'am. How are you? |
| 0:12.6 | Fine. How are you? |
| 0:13.6 | I'm well. |
| 0:14.5 | Could you please state and spell your full name for the court record? |
| 0:18.8 | Okay. Iris Daly Graf. Iris, I-R-D-E-R-I-S-D-L-L-E-Y-G-R-A-F-F. |
| 0:30.2 | All right, thank you. |
| 0:31.6 | Can you tell us about your current occupation and where you're currently employed? |
| 0:43.3 | I'm self-employed. My husband, I have a forensic training and consulting business. What is the name of that business? |
| 0:46.3 | Graff Investigative in Forensic Training. |
| 0:49.3 | Thank you. How long have you been employed as a forensic analyst? |
| 1:01.0 | Basically going back to 1989, not all of it with the same employee. Can you tell us a little bit about your employment history? |
| 1:04.0 | Where else have you worked? |
| 1:06.0 | Well, in law enforcement, I began in 1989 with the Oklahoma State Bureau of Investigation where I was a |
| 1:13.0 | sworn agent for the state began in the criminalistics division people commonly |
| 1:19.6 | referred to the crime lab I did crime scene investigation and forensic |
| 1:24.3 | serology and microscopy. |
| 1:31.3 | Eventually added to that bloodstained pattern analysis, |
| 1:36.3 | trajectory and shooting analysis, |
| 1:41.3 | forensic animation, |
| 1:53.7 | graphics in analysis, a lot of things, eventually focusing just as a crime scene agent where I did just the crime scene investigation, everything associated with that and without the additional benchwork in the laboratory. |
... |
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