The publication of Mohammed Rahman’s Homicide and Organised Crime is timely, coming as it does against the backdrop of a defining moment in the history of serious violence in England and Wales. After many years of decline, the levels of gun and knife crime began rising in 2014 and reached an all time high in the year 2018. Headline figures emerging from police-recorded crime and NHS data for year end September 2018 (compared with the previous survey year) suggested an 8% increase in the number of offences involving sharp instruments; a 15% increase in the number of hospital admissions for assault; a 14% increase in homicides; and a 17% increase in robbery offences (Office of National Statistics 2019). Evidence suggests that knife and gun crime has risen across almost all police force areas, both victim and perpetrators are getting younger and that a sizeable majority of homicides are linked to the illicit drug market—with the estimated costs of serious and organised crime around £37 billion annually (HM Government 2018a, b). Importantly, but perhaps unsurprisingly, HM Government (2018b) has confirmed that the majority of recorded violence tends to be male-on-male.