Chapter 3: The Digital Proof

The mention of the camera seemed to suck all the remaining oxygen out of the hallway. Martha’s expression didn't waver—if anything, a cold, grim satisfaction flickered across her features, though she masked it quickly behind a mask of maternal grief. I dropped my hand from David's arm, my blood turning to ice water in my veins. That security camera was part of the smart-home system David had insisted on installing when Sophie was born, a way to monitor the nursery and the main corridor while we worked in our respective home offices. I had never given it a second thought. It was just a white plastic dome on a grey wall.
"Yes," Martha said, her voice dropping into a steely, resolute cadence. "Check the camera, David. Let the machine tell you the truth. Let your wife explain away what the lens recorded."
David didn't answer her. His face drained of color as he pulled his dark smartphone from his pocket with trembling fingers. He tapped the screen rapidly, unlocking the security application with his thumbprint, navigating through the local server logs. The screen cast a cold, pale blue glow across his clean-shaven jawline. I remained kneeling on the hardwood floor, my hands pressed flat against the wood, staring up at the back of his head as he stood frozen in front of the overturned stroller. Every tick of the hallway clock sounded like a hammer blow against my skull.
"David, please," I whispered, the sound barely audible over the hum of the refrigerator in the nearby kitchen. "Don't just look at her word against mine. Watch the raw file. Check the timestamps."
David tapped the screen again, maximizing the clip from twenty minutes prior. I watched his eyes track across the moving images on the dark glass. For several agonizing seconds, the only sound was the soft, static hiss of the mobile application loading the high-definition stream. Then, David stopped breathing. I saw the muscles in his jaw clench so hard I thought his teeth might crack. His pupils dilated, swallowing the irises as he stared down at the four-inch screen in absolute, unadulterated horror.
"David?" I choked out, crawling forward an inch across the floor.
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He didn't look down at me. He slowly turned the dark smartphone toward us, the screen playing the looped digital file of the hallway. On the glowing display, a figure in a beige blouse—my blouse—clearly stepped toward the grey stroller and shoved it violently toward the precipice of the wooden stairs, watching it tumble down before turning away.
"Claire..." David whispered, his voice stripped of all warmth, sounding like a stranger speaking from the bottom of a well. "I saw what you did."