A prison built to inspire repentance. A history filled with isolation and suffering. And ghost stories that refuse to die.This Halloween on Poisoned Appalachia, we’re exploring Eastern State Penitentiary in Philadelphia, Pennsylvania, one of America’s most notoriously haunted prisons.From Al Capone’s alleged ghostly tormentor to shadow figures, unexplained laughter, and terrifying encounters inside abandoned cellblocks, we’ll separate the documented history from the legends that still linger behind these walls.Did the prisoners of Eastern State truly leave when their sentences ended? Or are some still trapped inside?