Chapter 4 - THE FORENSIC EDGE
By ten o’clock that morning, we were sitting in the high-rise office of Marcus Vance, a premier digital forensics attorney in downtown Hartford who specialized in cyber-harassment and deepfake defamation.
The room smelled of polished leather, expensive coffee, and cold legal efficiency. Marcus sat behind his massive mahogany desk, his laptop hooked up to a sixty-inch high-definition monitor mounted on the wall. Beside him sat Dr. Ethan Cross, a lead forensic media analyst whom Marcus had brought in on an emergency retainer.
Vivien sat stiffly in a leather armchair, clutching a cup of hot chamomile tea that she hadn't touched.
“Walk me through the timeline again, Lydia,” Marcus said, reviewing his notes while Dr. Cross loaded the video file into a specialized frame-by-frame analysis software.
“The reunion incident happened at approximately five p.m. yesterday,” I explained, my voice tight. “Grandma June humiliated my sister Monica and my parents in front of thirty people. By seven this morning, this video was sent directly to the Vanguard admissions board from a burner ProtonMail address.”
“And your sister has a background in tech?” Marcus asked.
“Monica works in corporate marketing for a digital media firm,” I replied, my eyes narrowing as the reality of the situation took shape. “She manages social media campaigns. She knows how to handle audio software. She knows how to hire freelancers online.”
Dr. Cross raised his hand, halting our conversation. “Alright, let’s look at the render.”
He pressed play on his control board. The video of “Vivien” appeared on the large monitor, playing at normal speed first, then slowing down to twenty-five percent.
“At first glance, it’s a remarkably sophisticated generative AI deepfake,” Dr. Cross said, pointing a red laser marker at the screen. “They took public photos of Vivien from her school’s public science fair website to build the 3D facial mesh, and they scraped voice audio from her school debate team uploads on YouTube to train a neural text-to-speech model.”
Vivien squeezed her eyes shut, horrified by the thought of her face and voice being harvested and repurposed into a weapon.
“However,” Dr. Cross continued, zooming in on Vivien’s face until the pixels became visible, “generative models leave math footprints. Watch the jawline right here when she utters the word 'inheritance'.”
He looped a three-second clip.
As the synthetic mouth moved, a tiny, micro-fraction distortion occurred at the base of the girl’s jaw—a faint, flickering distortion where the rendering software failed to match the lighting of the background room.
“Look at the edge of the jaw line,” Dr. Cross pointed out. “This isn't authentic. The frame rate of the facial overlay drops from sixty frames per second to fifty-eight for three consecutive frames. It’s an artificial overlay stitched onto a physical proxy actor.”
I let out a breath I felt like I had been holding for twenty-four hours. “So you can prove legally that it’s a fake?”
“In a court of law? Absolute slam dunk,” Dr. Cross said. “I can produce a certified forensic report within four hours that will satisfy any federal judge or academic board.”
I looked over at Vivien, expecting to see relief flood her face. But Marcus Vance wasn't smiling. He was staring at the metadata readout scrolling along the bottom of the secondary monitor.
“What is it, Marcus?” I asked, my heart seizing up again.
Marcus leaned forward, tapping the glass screen with his pen.
“ProtonMail accounts are anonymous, yes,” Marcus said quietly. “And the video was uploaded using a virtual private network based in Iceland. But whoever rendered this file on their local computer before uploading it committed a fatal rookie mistake.”
“What mistake?” I demanded.
Dr. Cross highlighted a line of code buried deep within the video file’s exchangeable image format data.
“They forgot to strip the local machine tag,” Dr. Cross revealed, looking up at me with an expression that turned my blood to solid ice. “The file was rendered on a dual-monitor work station using a specific licensed copy of Adobe After Effects. The software license isn't registered to a corporate marketing firm in Hartford, Lydia.”
My hands gripped the armrests of the chair. “Then who is it registered to?”
May you like
Marcus looked me dead in the eye. “It’s registered to a residential internet line in Greenwich, Connecticut. Registered under the name of Arthur Bennett.”
My father.
