Secret listening posts sit inside ordinary buildings in major cities. Numbers stations still broadcast coded messages over shortwave radio — and no one officially admits why. This compilation traces the full arc of modern surveillance, from hidden urban infrastructure and sonic weapons to subliminal influence campaigns and a computer virus that nearly started a world war. Havana Syndrome left diplomats with brain injuries and no official explanation. A wire encircles New York City that most residents have never heard of. And at the end of it all sits the quantum computer — a machine powerful enough to crack every encrypted secret humanity has ever kept. Nothing stays hidden forever. Learn more about your ad choices. Visit podcastchoices.com/adchoices