Police have revealed that the inquiry into the brutal death of a 21-year-old mother 12 years ago is to remain open.
The anniversary of the murder of Karen Hales takes place this week.
She was stabbed to death in front of her 18-month-old daughter and her body was set on fire at her home in Lavenham Road, Ipswich, in November 1993.
The case was one of the biggest dealt with by Suffolk Police, which followed up more than 1,500 leads but failed to charge anyone with murder.
The murder was featured on the BBC's Crimewatch UK programme and calls from the general public led to hundreds of people being interviewed.
Suffolk Police said the case is reviewed regularly to try to find fresh lines of inquiry.
A spokesman said: "Any new information is fully investigated and we are always appealing for the piece of information that could lead to Karen's killer."