The Pembrokeshire Murders saw Keith Allen represent Cooper, whos now in jail serving four life sentences for the murders of Peter and Gwenda Dixon and Richard and Helen Thomas, in addition to a vicious gunpoint rape and sexual assault on a group of teens.
The documentary The Pembrokeshire Murders: Catching The Game Show Killer, which airs on Thursday, January 14, reveals unknown cooling details about the killer, whose criminal activities have been highlighted today in an ITV three-part drama.
The conclusion of the drama drew in 6.6 million audiences on Wednesday night – the most significant over night audience for any ITV drama episode in three years.
Serial killer John Cooper showed harsh cruelty towards his own children and animals which culminated in some of Wales most notorious murders.
And the subsequent documentary now digs much deeper into the past of Cooper,
John Cooper is now serving 4 life sentences
” Ive definitely never been associated with a trial prior to where there were 3 complex however separate and hugely essential matters. And, obviously, the proof of one supported the evidence of another.”
The hour-long documentary features the investigators, legal representatives and forensic researcher who worked to bring justice to the victims, in addition to astonishing video of report on the original criminal offenses, the video footage of Coopers interviews and arrest – both of which were recreated in the dramatised variation.
And the contributors also reveal disturbing details about Coopers character.
Barrister Gerald Elias was Prosecuting Counsel at the trial of John Cooper at Swansea Crown Court
Elias tells viewers of the documentary that he required to prove he d lied on the stand throughout his break-in trial, in 1998, stating a mask did not belong to him, when it quite did.
” And when his children were small they reared some chicks and he shot them with a shotgun in front of them.”
” I didnt desire the jury going home thinking this represented the guy in any shape or form.”
The character of Cooper was never ever in doubt with the law enforcement officer who had actually studied and dealt with him face-to-face during the six years of Operation Ottawa.
The detective reveals that Cooper was just as vicious in your home. He tells viewers: “He was a nasty person even in the family environment. He resided on a farm and he eliminated a pig … with a hammer.
DS Gareth Rees, who actor Charles Dale represents in the dramatisation, was one of the officers who came face-to-face with Cooper in the footage.
In the drama you see Elias firmly insist on quizzing Cooper in the dock prior to the case broke for the day – Cooper had actually just painted a picture of himself as a caring spouse and daddy.
The Pembrokeshire Murders
” He could see the cards stacking versus him,” adds Rees.
Five shots. The most horrific sight youve ever seen. Here we had another double murder in Pembrokeshire.
In the interview video with Cooper, audiences see his mask drop during the discussion of DNA evidence on clothes and a weapon discovered in searches.
After the proof was destroyed by fire throughout the killings of the Thomases in 1985 authorities stopped working to find a suspect and even spoke with Cooper who was alibied by his horrified household.
Don Evans, Detective Chief Superintendent at Dyfed Powys Police in the 1980s, dealt with the murder investigations of both the Thomases and Dixons.
There I saw this terrible scene. Peter and Gwenda Dixon. Peter shot, connected, and his dear girl, partly unclothed.
Gwenda and Peter Dixon who were killed by Cooper on the Pembrokeshire coastal course in 1989
The documentary also includes jaw-dropping accounts of the forensic evidence found at Coopers spate of break-ins, including a sock from the Thomas house, Scoveston Park, from which fibers were found in the pockets of khaki shorts taken from the Dixons and a disposed of glove found near the scene of a house break-in.
Doctor Angela Gallop led the Forensic Science Team
Dr Angela Gallop, a forensic scientist who also dealt with the Stephen Lawrence case, says: “This grotty old muddy glove which had been recuperated from a hedgerow, that relates to the Dixons, with Coopers house address, with other hedgerow products, with the Milford Haven crime – that is the main product, I think, of the entire case.”
The Pembrokeshire Murders: Catching The Game Show Killer is on ITV at 9pm on Thursday, January 14
The investigator exposes that Cooper was simply as vicious at house. He tells audiences: “He was a nasty person even in the family environment. There I saw this awful scene. The most horrific sight youve ever seen. Here we had another double murder in Pembrokeshire.