Pembrokeshire Murders: Ex-officer on 'squeezing six years into three episodes By Chris Long image captionHollywood star Luke Evans (left) plays former Det Supt Steve Wilkins When senior detective Steve Wilkins was first told the investigation he led into one of the most notorious killers in modern Welsh history was being made into a primetime television show, his first thought was for the families of those who died, rather than who would be playing him. But that did not stop it coming as a bit of a surprise to the 61-year-old that ITV had cast Hollywood star Luke Evans as the lead in The Pembrokeshire Murders, a three-part drama about a cold case review team pursuing multiple murderer John Cooper.