The volunteer helping treat addiction in prison - with no officers in the room
Natalie Logan MacLean is a volunteer in Barlinnie - Scotland’s biggest, oldest, and toughest prison.
How one prison is trying to break the cycle of 'revolving door' inmates
HMP Barlinnie has developed an innovative recovery programme that treats substance abuse as a matter of health and life skills.
Inside Scotland's biggest jail: 'About 90% of the guys in my halls are on drugs'
ITV News was given exclusive access inside Barlinnie prison as it attempts to tackle the problem of drug addiction inside its forboding walls.