Her week began by pulling a man down from a homemade ligature and performing CPR to keep him alive. Days later, Alex South saved another inmate found hanging in his cell. And the working week ended with the prison officer rescuing a third prisoner who had tightened a noose around his neck.
In between – deep within the towering red-brick walls of Wormwood Scrubs – she dealt with several serious self-harm incidents each day.