Appeal for information on the anniversary of the murder of Ann Heron, who was found dead in her Darlington home 35 years ago.

The mother-of -three had been sunbathing in her garden at Aeolian House, on the A67, on the afternoon of Friday, August 3, 1990.

However, at around 6pm that evening, the 44-year-old’s body was discovered in her living room lying in a pool of blood.

Despite an extensive police investigation, which spanned several years and has been subject to significant review, her killer has never been found.

Detectives are continuing to use advances in forensic technology to review items recovered from her home.

They also review all information that is submitted by members of the public and urge anyone who might know something from that day, however insignificant they think it might be, to get in touch.

D/Supt Craig Rudd, of Durham Constabulary’s Major Crime Team, said: “The investigation into the murder of Ann Heron remains open.

“The Major Crime Team continues to review the case and investigate any new information and use advances in forensic science in the hope of identifying evidence to prove who is responsible.

“I hope this appeal on the 35-year anniversary of Ann Heron’s murder will jog someone’s memory and they come forward with any information they may have.

“Ann’s family have been left devasted by what happened, they deserve closure, and we will never give up trying to find who killed her.”

Ann’s son Ralph Cockburn added: “My sister Ann Marie and I want to express our gratitude to those who have already come forward with information.

Your co-operation has been incredibly valuable, and we’ve made progress thanks to you. But we’re not there yet; we need your help to complete the picture.

“I know there are people out there who know something about what happened that day. You might think that the info you have is insignificant, but trust me, even the smallest detail could be a game-changer.

“It might just be that missing puzzle piece we need to finally catch our mum’s killer.”