Episode 6, "The Chicago Strangler and the Lady Detective"

Chicago, 1866. The Civil War is over, and immigrants are pouring into Chicago from all over Europe looking for a better life. What they find instead are very few jobs, followed of course by a spike in crime, including a rash of brutal sexual murders against women in the mostly Irish and German areas of the city. The Pinkerton Detective Agency is called in by the city's major business interests who feel the police are too inept to solve these dreadful crimes. Pinkerton selects one of his top detectives, Kate Warne, known throughout the world as "The First Lady Detective", to hunt down the murderer. But how deep is Kate willing to travel into the Pits of Hell in order to complete her mission?