Much was made of crime in Victorian London. The Victorians were terrified of the lower-classes, particularly down-and-out men living in the crowded outskirts of the city who, they thought, were lurking in the shadows, just waiting for the opportunity to arise for a well-timed theft, brawl, or even worse. Life, for most, was hard. But in 1888, Londoners clamoring for a bit of excitement to spice up the drudgery of their lives got far more than they bargained for. They got weeks of abject terror surrounding a madman who slaughtered women in London's East End... who was never identified or caught. And more than 100 years later, we are still no closer to really identifying one of the most terrible killers of all time.

Or are we?

In this first half of our special two-part Halloween episode, we are going to delve into a theory that identifies Jack the Ripper as the English painter Walter Sickert. And come back next week to hear the second half of our show and see images of Sickert's work.