Mentorn Scotland, part of the Tinopolis Group, has been granted unprecedented documentary access to Scotland’s specialist Cold Case Unit (CCU) and Police Scotland investigative teams, for a new three-part Channel 4 series.

The Cold Case Unit was created in 2011 at the instruction of Scotland’s Chief prosecutor, the then Lord Advocate, Frank Mulholland, to assist prosecutors from Scotland’s Crown Office and Procurator Fiscal Service (COPFS) and Police Scotland to review unsolved historic murders.

Using the Scottish Homicide Database, that dates back to 1960, Prosecutors and Detectives apply modern forensic and other investigative techniques to historic murders, in an attempt to resolve some of Scotland’s most high-profile cases.

Since its conception, the unit working closely with Police Scotland, has achieved substantial successes: from the conviction of serial killer and sex offender Angus Sinclair for the infamous Worlds End Murders, to putting John Docherty behind bars for the 1986 killing of Elaine Doyle.

With access to the CCU, Police Scotland and forensic scientists, the 3x60 observational series, filmed over two years, will follow the investigation and prosecution process of historic murder investigations in Scotland, and the hunt for justice.

Commissioned by Amy Flanagan, Deputy Head of Documentaries at Channel 4, the series is produced and directed by Andrew Abbott, and the executive producer is Iain Scollay.

Amy Flanagan, Deputy Head of Factual at Channel 4, said:  'With such unprecedented access this series is set to reveal the incredible skills of the Cold Case Unit.  As their investigations into historic unsolved crimes unfold, we will gain a fascinating insight into how policing has changed over the years but also why justice matters to those families involved, even thirty years later.'

Iain Scollay, Creative Director, Mentorn Scotland and Executive Producer said, “We are delighted to have secured this very privileged access to both Police Scotland and the Crown Office. The meticulous work that they do, re-opening and investigating historic cases, is extraordinary and will make for a compelling series.”

The series is due to air in 2017.