Dr Gwen Adshead worked as a forensic psychiatrist and psychotherapist in the NHS for three decades, including within prisons and secure hospitals. She holds an MA in Medical Law and Ethics, an honorary doctorate from St George's Hospital Medical School and delivered the BBC Reith Lectures in 2024. She co-authored the Sunday Times bestseller The Devil You Know with Eileen Horne. Horne is a writer and dramatist. She worked for twenty years as a television drama producer and has been an editor, media lecturer and translator.