Detectives investigating the murder of a Wisbech pensioner 10 years ago will appeal for help to catch her killer on national television with a £20,000 Crimestoppers reward for information.
The unsolved murder of Una Crown will appear on BBC One's Crimewatch today at 10am (March 15), 10 years on from the tragic case.
Cambridgeshire Police were called after family members, and a neighbour discovered the body of 86-year-old Mrs Crown at her bungalow in Magazine Lane on Sunday, January 13, 2013.
She had been seen alive two days previously and had spoken to a friend over the phone at about 5pm on Saturday, the day before her body was discovered by police.
The death was initially treated as unexplained, but after a post-mortem examination concluded Mrs Crown died from stab wounds to her neck and chest, a murder investigation was launched.
Mrs Crown's clothing had also been set alight in an apparent attempt to disguise her injuries and destroy evidence, but the fire did not spread to the rest of the house.
Detective Chief Inspector Iain Moor, from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit, will be interviewed on BBC Crimewatch Live, which airs at 10am on BBC One.
He said: "It is incredibly positive that this case will feature on Crimewatch and reach such a large audience, and we are thankful to BBC producers for featuring it and to the charity Crimestoppers for offering this reward.
"Ten years on from this tragic case, Mrs Crown's murderer has not been caught, and we have not been able to get justice for her family.
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"We continue to seek opportunities for new lines of enquiry, and this TV appearance, and subsequent reward of up to £20,000, will give us another chance to re-appeal to the public and keep the case in people's minds.
"We still believe the answer to solving this case lies within the local community.
"I am urging anyone who has information but has not yet come forward, to do the right thing and get in touch – someone out there knows what happened to Mrs Crown.
"Any information, no matter how small or insignificant it may seem, may be key to solving this investigation."
The Crimestoppers reward, of up to £20,000, is offered for information which leads to the arrest and conviction of Mrs Crown's killer.
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Annabelle Goodenough, Crimestoppers' South East Regional Manager, said: "This is a truly awful, shocking and sad case.
"Our thoughts are very much with Una's family and friends, who remain desperate for answers and justice.
"We believe there are people who know what happened or have suspicions. Our charity, which is independent of the police, exists to help make all communities safer by giving people a way to speak up about crime, completely anonymously.
"You can talk to Crimestoppers with no comeback. This means we never ask for, or store, any of your personal details.
"If you know something, even if you think it's insignificant, your information could make a positive difference and you could be eligible for a reward.
"Please call our UK Contact Centre on freephone 0800 555 111, which is open 24 hours a day, seven days a week, or complete a simple and secure anonymous online form at Crimestoppers-uk.org.
"We cannot trace your call or track your IP address and we never ask for or record any personal information. No one will ever know you contacted us."
The £20,000 reward can only be claimed by those who provide information to Crimestoppers directly on 0800 555 111 or via their online form, which leads to the arrest and conviction of those responsible.
Anyone involved in the murder will not be eligible to claim any of the reward.
Information can also be reported to police, quoting Operation Valyrian, via the Major Incident Public Portal.
The Crimewatch programme airs today (March 15) and can be accessed on BBC iPlayer.
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