With a brand new 3D printer, [Andy] set to work on designing Jack the Ripper Bot. The design has two trays mounted to a standard computer DVD drive, an ‘in’ tray and an ‘out’ tray.

A letter that was found in an old book in Australia and sold on eBay for £240 seems to have revealed the long-hidden identity of the UK's most notorious serial killer, Jack the Ripper.

How did the Jack the Ripper case shape the way true crime is covered today? Lucy Worsley investigates how these shocking killings created a world of entertainment based on murder. Show more True ...