In one of the greatest unsolved murder cases of all times, in 1888, Jack the Ripper terrorises the city of London, killing five women in gruesome attacks. He is one of the most infamous names in English criminal history and remains an enigma. However, a new approach is uncovering evidence that turns the case on its head. The new investigation unearths evidence that there could have been two people involved in these crimes.
In 1483 the king of England, Edward V and his nine year old brother disappeared from the Tower of London amid rumours of murder - an infanticide which altered the course of British history. It changed the royal bloodline, resulted in near bankruptcy of the country . Their uncle Richard III has long been accused of the crime. However, modern investigative techniques are throwing his guilt into doubt by exposing medieval spin doctors who turned Richard into a murderous villain, while concealing two other prime suspects. All will be revealed on Nat Geo tomorrow at 10 p.m.