In late December 2025, residents across Cincinnati began reporting a strange sound in the night. High-pitched, oscillating, and seemingly coming from the sky. Officials suggested industrial causes. Rail yards were blamed. But the sound didn’t behave like normal machinery.Cincinnati wasn’t alone.From Indiana to Canada, from Germany to the United Kingdom, cities across the world have reported the same phenomenon for decades. They are known as The Hum or Sky Trumpets.In this episode of Ghosts in the Night, we investigate the Cincinnati incident, trace the global pattern, break down official explanations, and explore the unsettling possibility that the sound isn’t the source of the mystery, but a byproduct of something else entirely.