CONVICTED mass murderer Jeremy Bamber has offered to take a lie detector test in a bid to prove his innocence. The 45-year-old has spent more than 20 years in prison for murdering his adoptive parents, Nevilland June, his sister Sheila Caffell and her two young twins, Nicholas and Daniel, six.

CONVICTED mass murderer Jeremy Bamber has offered to take a lie detector test in a bid to prove his innocence.

The 45-year-old has spent more than 20 years in prison for murdering his adoptive parents, Nevilland June, his sister Sheila Caffell and her two young twins, Nicholas and Daniel, six.

They were all found with bullet wounds from a rifle at a remote farmhouse in the Essex countryside in August 1985.

Bamber has always protested his innocence, saying his schizophrenic sister, a model known as 'Bambi', was responsible for the killings before turning the gun on herself.

He is hoping the Court of Appeal will hear the case again and in a bid to clear his name, he has pledged to take a polygraph test.

He is to be questioned not just on whether he was the killer but also he will be quizzed on whether he had any involvement in a plot to murder his family in a bid to dispel claims he paid a hitman.

Speaking to the EADT from Full Sutton Prison in York last night, he said he believed physical evidence should clear his name, but was prepared to take the polygraph test as well.

“I am more than happy to do it and will go through with it - I am sure the prosecution will just say that 'psychopaths' will pass it anyway but I am sure it will help.

“I have always wanted to do one and I hope the Criminal Cases Review Commission (CCRC) will take some notice of it and it helps to confirm things for people of what I have been saying all along.

“Ultimately though it is the alibi evidence that establishes my innocence - it is not about my word because no one has believed that for 21 years.”

Bamber claims when he arrived at White House Farm in Tolleshunt D'Arcy the killer was still inside as there was movements seen through the window.

Yesterday, Bamber's legal advisor, Giovanni di Stefano , said he was planning to submit the results by sworn affidavit of the expert who will conduct the test as the CCRC does not recognise polygraph evidence.

He said: “The test will be conducted at HMP Full Sutton in the presence of solicitors who will retain and transmit the results accordingly.

“This case has developed so many inconsistencies and divided many. I sincerely hope the results of the polygraph test will assist those in reconciling.”

Essex Police said yesterday that they are unable to comment on the case because it is currently being looked at by the Criminal Cases Review Commission.

On the night of the killings officers were initially alerted by Bamber, who called to say his father had phoned to say Sheila had gone crazy and had a gun.

When armed police arrived they found Nevill's body in the kitchen, and June was slumped on the floor by her bed.

The twins had both been shot at close range while they slept and their mother was found in the same room as June, with a single gunshot wound under her chin from the rifle which had been used to kill the entire family.

Bamber was given five life sentences after being convicted on a majority verdict at Chelmsford Crown Court in October 1986.