On Sunday, the 13th of January, 2013. Una Crown (86) was found dead in the hallway of her Bungalow in Magazine Lane, Cambridgeshire, shortly after 11am. Una Crown was last seen by family at 11am on Friday. and she'd made a phone call to a friend at 6pm on Saturday night. It's believed Una was murdered Saturday night / early Sunday morning.
The post-mortem revealed that Una died of stab wounds to her neck and chest, and she was then set on fire in an "apparent attempt by her killer to hide her injuries and destroy evidence". Her clothes had been set alight but the fire did not spread to the rest of the flat.
An engagement ring she had worn for 40 years and £40 in cash were missing, leading to the possibility that the attack could have been a robbery gone wrong.
Unfrotunately, due to fire damage Una's death was not considered suspicious until her post-mortem. This meant that the scene was not being processed as a crime scene, and any evidence could have been contaminated.
In 2017, Cambridgeshire police said that "the investigation work over the last 12 months has concentrated on improved forensic techniques and the re-examination of exhibits. This investigation remains an active undetected murder enquiry and anyone with information is asked to contact police on 101 or Crimestoppers."
Arrests have been in relation to Una's murder, though no-one has been charged.