Horrifying, heartbreaking and eye-opening, these are the stories, the patients and the cases that have characterised a career spent behind bars.

The no-holds-barred memoirs of a GP who went from working at a quiet suburban practice to treating the country’s most dangerous criminals – first in young offenders’ institutions, then at the notorious Wormwood Scrubs and finally at Europe’s largest women-only prison in Europe, Bronzefield.