Ann Heron murder: 36 years, still no killer

Ann Heron was found dead in her home on August 3, 1990, near Darlington, following a brutal attack on her front lawn. She was discovered by her husband, Peter Heron, with her throat slit, and the case has remained unsolved for 36 years.

Peter Heron was charged with her murder in 2005 after DNA evidence emerged, but the charges were dropped due to insufficient evidence. He remains a suspect, though his family maintains his innocence, arguing his DNA on his wife at home is reasonable.

The investigation has been extensive, involving thousands of hours and interviews. Durham Constabulary is actively reviewing the case using modern forensic techniques and re-examining Peter Heron's movements to construct a detailed timeline.

One theory involves a blue car seen near the property around the time of the murder, driven by a sun-tanned man. Additionally, confession letters were sent to local media and Mr. Heron in 1994, though their authenticity remains unconfirmed.

A private investigator, Jen Jarvie, suggests Michael Benson, a career criminal who had escaped from jail, as a potential suspect due to his proximity and criminal history. However, police believe Benson was abroad at the time. Ann's son, Ralph Cockburn, a retired detective, continues to seek answers, haunted by his mother's unsolved murder.