In the mid-19th century, London was literally filling with corpses. When the city was in the grips of a cholera epidemic, the already-overfilled cemetaries couldn't handle the extra bodies. So when there's literally no room in the soil for another dead body, what's a city to do? To the creators of the London Necropolis Railway, the answer was simple -- build a train for the dead. Tune in to learn some grisly, ridiculous history with Ben and Noel.