Ten of the most dangerous and disruptive men in the prison system have been brought together in an experimental unit at Hull Jail. A new softly-softly regime is being tested on inmates like Fred Low, who is serving three life sentences - one for killing a fellow prisoner - and Patrick Mackay, serving five life sentences for manslaughter and robbery. 40 Minutes gained access to the unit as the prisoners started to reveal themselves to the hand-picked staff, and as conflicts began. The most serious clash was over the only woman working full time in the unit, and it involved David McAllister, serving 19 years for armed robbery and assault, who later escaped from the unit and was on the run for five days. This film tells the story of the most controversial unit in our prisons.