A police re-examination of a 35-year-old murder mystery, sparked by two psychics, has failed to crack the case.

Lesley Calvert was found dead on a remote King Country farm in February 1977. Her killer was never found.

In 2010, her husband Lindsay, who had lived under a cloud of suspicion for 33 years, contacted producers of television show Sensing Murder in a last-ditch effort to clear his name.

The psychics both concluded Mrs Calvert was murdered, but her husband was not responsible.

They gave a detailed description of the alleged culprit, who still lived in the Waikawau area, stating what he did for a living and the vehicle he drove.

Detective Senior Sergeant Grant Coward, of the New Plymouth CIB, said a significant amount of work had been done on the case over the past two to three years.

"A number of further inquiries were made but as a result of those there was nothing further gained that would add evidential weight to the inquiry," Mr Coward said.

He confirmed police had contacted the suspect identified by the psychics.

"We spoke to a number of people, including a gentleman who would be described as a person of interest and he was interviewed. No further evidence was gained," he said.

Mr Coward said information received from the public, after the programme had aired, was also followed up.

"It hasn't led us in any new direction."

The Taranaki Daily News could not contact Mr Calvert yesterday for comment.