Taj Nathan is a medical doctor who has worked for over two decades as a forensic psychiatrist. In his clinical practice, he continues to assess and treat the perpetrators and victims of violence who reside in secure hospitals, prisons and the community. Alongside his clinical work, he has carried out extensive research in many areas of forensic psychiatry (including aggression and its causes), and he has led the development of innovative services for offenders with psychiatric difficulties. Drawing on both his clinical and academic expertise, he is frequently asked to provide expert evidence in criminal and family law courts. Having authored numerous scientific papers and academic book chapters, he turned to writing for a wider audience and in 2018 he won the John Murray and Spectator Essay Prize for a piece on the origins of violence. This is his first book.