Au Pair Affair Trial Of Brendan Banfield: Kathryn Colombo Takes The Stand — Knife Presented as One Weapon Used in Murder
Hidden Killers With Tony Brueski | True Crime News & Commentary
True Crime Today
3.3 • 911 Ratings
🗓️ 15 January 2026
⏱️ 50 minutes
🧾️ Download transcript
Summary
Kathryn Colombo, Scientist at the Virginia Dept. of Forensics Science, 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
Join Our SubStack For AD-FREE ADVANCE EPISODES & EXTRAS!: https://hiddenkillers.substack.com/
Want to comment and watch this podcast as a video? Check out our YouTube Channel. https://www.youtube.com/@hiddenkillerspod
Instagram https://www.instagram.com/hiddenkillerspod/
Facebook https://www.facebook.com/hiddenkillerspod/
Tik-Tok https://www.tiktok.com/@hiddenkillerspod
X Twitter https://x.com/tonybpod
Listen Ad-Free On Apple Podcasts Here: https://podcasts.apple.com/us/podcast/true-crime-today-premium-plus-ad-free-advance-episode/id1705422872
This publication contains commentary and opinion based on publicly available information. All individuals are presumed innocent until proven guilty in a court of law. Nothing published here should be taken as a statement of fact, health or legal advice.
Transcript
Click on a timestamp to play from that location
| 0:00.0 | You're listening to the A-Pair Affair Murder Trial of Bratton Vanfield from True Crying |
| 0:05.3 | Today on the Hidden Killers podcast. Now, back to the courtroom. Good afternoon. How are you? |
| 0:11.9 | Good afternoon. Could you please state and spell your name for the court record? |
| 0:17.8 | My name is Catherine Colombo. My first name is spelled K-A-T-H-R-Y-N. |
| 0:24.2 | My last name is spelled C-O-L-O-M-B-O. |
| 0:28.1 | Thank you. |
| 0:29.3 | What is your current occupation and where are you employed? |
| 0:32.5 | I'm a forensic scientist. |
| 0:33.7 | I'm employed by the Virginia Department of Forensic Science. |
| 0:37.2 | And how long have you worked for DFS? |
| 0:39.3 | For 18 years. |
| 0:41.3 | Did you have any experience in forensic DNA testing prior to D. |
| 0:46.3 | I did. I was employed for nine years as a DNA analyst at a private forensic DNA testing laboratory. |
| 0:55.0 | I was employed for three years at the FBI laboratory |
| 0:59.0 | conducting testing in the serology and DNA analysis units, |
| 1:04.0 | and I was employed for one year at the Suffolk County Laboratory in New York |
| 1:08.0 | in the same capacity, conducting body fluid testing and DNA testing. |
| 1:13.3 | Outside of your extensive experience, did you have to go through any specific training to |
| 1:18.1 | become a DFS employee? At DFS, and actually for each of my places of employment, there was |
| 1:26.2 | specialized training with supervisory |
| 1:29.4 | and senior scientists, and it involved a combination |
| 1:33.6 | of attending lectures, reading the literature, |
... |
Please login to see the full transcript.
Disclaimer: The podcast and artwork embedded on this page are from True Crime Today, and are the property of its owner and not affiliated with or endorsed by Tapesearch.
Generated transcripts are the property of True Crime Today and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.
Copyright © Tapesearch 2026.

