David Swindle was once described by the Scotsman as being The Jigsaw Man because he spent four years piecing together the crimes and life of one of the UK´s most evil serial killers - Peter Tobin.
Indeed over the years there have been various TV documentaries and media articles about the work David did regarding Tobin and the formation of Operation Anagram to examine Tobin's life and identify other victims he may have killed over decades.
Tobin appeared to lead a relatively normal life, and by all accounts he was someone who could ingratiate himself into any situation. In the early 90s Tobin raped and tried to murder two 14 year old girls, turned on the gas tap and left them to die. Luckily the girls survived and Tobin was subsequently captured and served 14 years in prison and was released in 2004 at the age of 58
He moved north to Glasgow where he worked as a church handyman at St Patricks Church in Anderston using the false name of Patrick McLaughlin and was trusted by various charities and the Church as someone who got on with everyone.
It was at this church in September 2006 that Peter Tobin brutally murdered Polish student Angelika Kulk and concealed her under the church floor.
As Senior Investigating Officer ( SIO) for this murder enquiry David Swindle believed Tobin had committed other murders and launched the UK wide life timelining Operation Anagram which he referred to as a "Search for the Truth" and leaving no stone unturned in the search for victims of Peter Tobin.
As a result of Operation Anagram two young women Vicky Hamillton and Dinah McNicol who had been missing since 1991 were found buried in the garden of a house in Margate, Kent where Tobin lived in 1991.
The search for the truth and victims continued until David left the then Strathclyde Police in June 2011. There is no doubt Tobin killed other victims and Tobin's potential links to other unresolved murders, outstanding missing persons and other crime continues to be of interest to the public.
Tobin continues to deny the murders of Angelika Kluk, Vicky Hamilton and Dinah McNicol. If he does not admit what else he has done he will die in prison taking his secrets to the grave.
The continued media interest and documentaries about what horrible serial killer Peter Tobin did to his victims and other aspects about his life maintain the pressure on him and the hope that he will eventually admit what else he has done.