London is a city steeped in history, but beneath its bustling streets and iconic landmarks lies a hidden, sinister world that most travelers never see. This program explores the dark, subterranean secrets of the city, from the haunting mysteries of the Tower of London to the chilling, unsolved crimes of Jack the Ripper. Through the eyes of experts and ghost hunters, we delve into the shadows of the past, uncovering the eerie tales and unexplained phenomena that continue to haunt the capital.