In this episode of Hysterical, I explore the eerie case of the Halifax Slasher, a wave of fear that swept through a Yorkshire town in 1938. It started with a few alarming reports of a man attacking women with a razor. As newspapers caught wind of the story, panic spread like wildfire. Vigilante groups formed, suspects were hunted, and the town spiraled into chaos. But what really happened in Halifax—and why does it still stand as a textbook case of mass hysteria?