Every year, the Prison Service takes graduates onto its fast track governor training scheme.
They could be governing by the age of 24.
Clare English gets unique access to the training regime and asks whether the recruits have the life skills to take on this enormous responsibility.
Following prospective governors through the selection process and initial training.
One recruit has wanted to govern a prison since she was 11.
As they learn how to disarm violent prisoners and resist psychological manipulation, they outline their fears and aspirations for their new careers.
Clare follows three new recruits as they find their feet in the prison world.
In an environment where drug smuggling, suicide attempts and violence are part of the daily diet, there is much to learn.
Even opening a cell door is a task that has to be practiced.
With many staff hostile to the fast-track scheme, there's the added pressure of fitting in.
Within a year, with little experience of life, let alone prison, behind them, they'll be managing staff old enough to be their parents.
Clare meets the Governors of Holloway and Bristol prisons, and learns what it takes to run these mini-towns within walls.
At Wandsworth, a trainee in his twenties is duty governor, struggling to find places for the new prisoners arriving from court - his prison is already at bursting point.
In Cardiff, another junior governor deals with complaints of abuse, and acts as judge in the prison's mini-court.
His age confounds many prisoners.
We also hear from the Prison Service Director General, Phil Wheatley, and Chief Inspector of Prisons, Anne Owers.