A diagnosed psychopath, Cooper – who was married to late other half Patricia and had 2 children – was a respected burglar before he turned killer..
Richard and Helen Thomas were discovered killed at their house, Scoveston Manor, near Milford Haven, in December 1985. They had been killed in an execution design, with both suffering shotgun injuries.
Police speculated that there may have been a run-in in between the 2 however soon decided a 3rd party was involved. Cooper sprinkled paraffin around the home and set it alight.
It was speculated that Cooper, a local in the location, was envious of the millionaire farmers and targeted them at the remote manor house.
He was understood to delight in the Pembrokeshire coast – even discussing it on Bullseye – where he intercepted the walk of his 2nd set of victims..
He explained: What had actually taken place was Coopers wife, who was a seamstress, had shortened the shorts and in doing so she had in fact sealed in a few of the forensic proof..
Cooper had been released from jail on parole in January 2009, however was jailed once again 4 months later for the double murders, a severe sexual attack and five tried break-ins in Milford Haven in 1996..
Steve told how when he was jailed, he was found with a map, gloves and a rope in the boot of his cars and truck..
Cooper rejects his regret, he was founded guilty of 2 double murders and imprisoned for life in May 2011..
Father-of-two Steve, now 61 and living in Cheshire with his second other half Diane, 56, grew up in Pembrokeshire and is played by Welsh-born Hollywood star Luke Evans in the series.
Cooper (pictured in 2009 as he was led into court) was sentenced to fourteen years in 1998 for robbery and robbery, enabling the cops to collect additional evidence against him.
Cooper shot Peter and Gwenda Dixon in the confront with a sawn-off shotgun as they delighted in a coastal walk on the last day of their Welsh summer vacation on the Pembrokeshire coast, in June 1989.
He hid their bodies in nearby bushes. Cooper likewise took money from them, using their bank cards to withdraw ₤ 300..
Cooper was sentenced to fourteen years in 1998 for break-in and break-in, allowing the cops to collect more evidence against him.
While discussing the material from the investigations, Steve hired criminal psychologist Dr Adrian West to build up a profile of the killer..
He told The Sun: I asked Adrian, “How harmful is this man?” and he said, “Steve, I have actually only discovered 2 people in my professional life who if I found in my bed room in the middle of the night, I know I would have to kill them to survive. One is Donald Neilson, the so-called Black Panther, and the other is John Cooper.” And I just went cold. I just thought, yes, this is an unsafe person..
Steve kept the resumed investigation, codenamed Operation Ottawa, secret prior to exposing live on ITV Wales News in November 2007 that he was carrying out a cold-case review and made a restored public appeal for witnesses.
A breakthrough came in 2009 when archive video from Bullseye, fronted by Jim Bowen, was gotten and officers handled to freeze a frame of Cooper standing in the specific same position as an artists impression of the wanted killer sketched at the time of the initial investigation..
Steve said the similarity was such that it looked like a tracing. Together with the striking resemblance to the artists sketch, Cooper talking about the area of Pembrokeshire on the program also led detectives to believe he was their killer.
Having seen the shorts recuperated from Coopers home were much shorter than the artists impression, Steve asked forensic specialists to unpick the hem – which is when they discovered the traces of Mr Dixons DNA.
And I just went cold. I just believed, yes, this is a dangerous person..
Pictured: the gun John Cooper utilized to murder the Dixons and items of clothing found at the time.
Cooper was generated for interviews but rejected any guilt, insisting he had actually not killed anybody.