Murder by Numbers: British Serial Sex Killers Since 1950 by Anna Gekoski is a compelling true crime study that examines the lives, backgrounds, and crimes of some of Britain's most notorious serial killers. Through detailed research and case comparisons, the book explores recurring patterns in their childhoods, personalities, and criminal behaviour, while considering the psychological and social factors that may have contributed to their actions. Offering both factual insight and thoughtful analysis, it provides a chilling look at some of the UK's most infamous criminal cases.