In this segment of Secrets of Scotland Yard, learn about the innovative techniques of crime detection that were developed when Scotland Yard was racing to catch Jack the Ripper and are still in use today. Ripper expert, John Chambers, walks the viewer through Jack the Ripper's reign of terror as well as the tools that Scotland Yard used in their investigation. The world’s first criminal profile was developed as the Met gathered clues from Jack the Ripper’s multiple heinous crimes. The Ripper investigators also documented the crime scenes in intimate detail, a new practice for police. In 1888, photographs were added to the police's investigative toolkit for the first time. While the Ripper murders were never solved, the search created techniques that advanced the Yard's investigative abilities.