The last episode of the ITV drama The Pembrokeshire Murders airs tonight (Wednesday). Based on the re-investigation of two unsolved murders in the county and the subsequent arrest of local man, John William Cooper, the series stars Luke Evans and Keith Allen.

Here we take a look back through the Western Telegraph archives from the moment Cooper was charged, through a crown court trial that included evidence from beyond the grave to the relief of the families of his victims, Peter and Gwenda Dixon and Richard and Helen Thomas.

Click on the links below to read the story as it unfurled.

The pre-trial court appearances

https://www.westerntelegraph.co.uk/news/4370506.john-william-cooper-charged-with-double-murders/ May 14 2009

https://www.westerntelegraph.co.uk/news/4399776.prosecution-tells-of-complex-investigations-in-double-murders-case/ May 27 2009

https://www.westerntelegraph.co.uk/news/4520020.pembrokeshire-double-murders-charge-man-to-enter-pleas-in-october/ July 30 2009

https://www.westerntelegraph.co.uk/news/4706699.pembrokeshire-man-charged-with-scoveston-and-coast-path-murders-due-to-appear-at-swansea-crown-court/ 28 October 

https://www.westerntelegraph.co.uk/news/4707977.letterston-man-pleads-not-guilty-to-coast-path-and-scoveston-manor-murders/ 28 October 2009

https://www.westerntelegraph.co.uk/news/8259904.john-cooper-to-face-trial-in-october-over-cliff-path-and-scoveston-double-murders/ July 2010

https://www.westerntelegraph.co.uk/news/8474846.court-appearance-for-man-charged-with-pembrokeshire-double-murders/ 26 October 2010

https://www.westerntelegraph.co.uk/news/8919384.trial-of-john-william-cooper-to-start-at-swansea-crown-court/ March 20 2011

The trial begins at Swansea Crown Court

https://www.westerntelegraph.co.uk/news/8922642.jury-selection-begins-in-double-murders-trial/ March 21 2011

https://www.westerntelegraph.co.uk/news/8936656.breaking-news-double-murders-trial-suddenly-halted/ March 28 2011

Shocking new evidence, Cooper takes to the witness stand and a testimony from beyond the grave

https://www.westerntelegraph.co.uk/news/8948249.double-murders-trial-key-found-at-coopers-home-fitted-lock-at-victims-farm/ April 1 2011

https://www.westerntelegraph.co.uk/news/8953975.double-murders-trial-jury-to-visit-pembrokeshire-crime-scenes/ April 5 2011

https://www.westerntelegraph.co.uk/news/8961980.footage-of-cooper-compared-to-artist-impression-in-trial-latest/ April 7 2001

https://www.westerntelegraph.co.uk/news/8968162.double-murders-trial-coast-path-victims-daughter-went-abroad-rather-than-join-parents-in-pembrokeshire/ April 12 2011

https://www.westerntelegraph.co.uk/news/8971171.double-murders-trial-court-hears-rape-attack-evidence-from-beyond-the-grave/ April 13 2011

https://www.westerntelegraph.co.uk/news/8975712.double-murders-trial-son-tells-of-coopers-night-walks-with-shotgun/ April 14 2011

https://www.westerntelegraph.co.uk/news/8981001.double-murders-trial-screw-from-shotgun-links-cooper-to-murders/ April 18 2011

https://www.westerntelegraph.co.uk/news/8982431.double-murders-trial-cooper-had-home-made-burglary-device/ April 19 2011

https://www.westerntelegraph.co.uk/news/8985652.double-murders-trial-dna-evidence-contamination-claim/ April 20 2011

https://www.westerntelegraph.co.uk/news/8995018.double-murders-trial-fibres-connect-cooper-to-crimes/ April 27

https://www.westerntelegraph.co.uk/news/8999705.double-murders-trial-jurys-question-to-judge-reveals-new-evidence/ April 28 2011

https://www.westerntelegraph.co.uk/news/9007448.double-murders-trial-cooper-first-linked-to-murders-11-years-ago/ May 4 2011

https://www.westerntelegraph.co.uk/news/9017376.double-murders-trial-cooper-takes-to-the-witness-box/ May 10 2011

https://www.westerntelegraph.co.uk/news/9020261.double-murders-trial-jealousy-after-coopers-94000-spot-the-ball-win/ May 11 2011

https://www.westerntelegraph.co.uk/news/9033260.latest-in-trial-of-john-william-cooper/ 18 May 2011

The closing arguments, the jury retires and Cooper is found guilty 

https://www.westerntelegraph.co.uk/news/9038296.jury-hears-prosecution-closing-address-in-cooper-trial/ May 19 2011

https://www.westerntelegraph.co.uk/news/9040245.coopers-defence-sum-up-their-case/ May 20 2011

https://www.westerntelegraph.co.uk/news/9043591.double-murders-trial-jury-retires-to-consider-murder-verdicts/ May 23 2011

https://www.westerntelegraph.co.uk/news/9050820.breaking-news-cooper-guilty-of-four-brutal-murders/ May 26 2011

https://www.westerntelegraph.co.uk/news/9051010.double-murders-trial-officer-brands-cooper-evil/ May 26 2011

The timeline of the investigation, the tragic teen who never saw justice, a reporter remembers and relief for the families

https://www.westerntelegraph.co.uk/news/9050895.double-murders-trial-timeline-of-investigations-that-spanned-more-than-two-decades/ May 26 2011

https://www.westerntelegraph.co.uk/news/9063287.cooper-trial-mount-teen-never-saw-justice/ June 2 2011

https://www.westerntelegraph.co.uk/news/9063258.western-telegraph-on-murder-trail-for-25-years/ June 2 2011

https://www.westerntelegraph.co.uk/news/9063248.relief-for-families-as-john-cooper-is-jailed/ June 2 2011

https://www.westerntelegraph.co.uk/news/9063292.cooper-investigation-family-seeks-answers-to-mysterious-death/ June 2 2011