Throughout his time as a murder squad detective, Trevor Marriott has seen first-hand the wanton slayings and butcheries that have been committed by both men and women who have warped, depraved and sadistic minds. In this fascinating and chilling book, he examines the world's most notorious serial killers and the despicable crimes they committed. From William McDonald, the 'Sydney Mutilator', to 'Dusseldorf Vampire' Peter Kurten, Steve Wright, the 'Suffolk Strangler', and the USA's satanic Ripper Crew, these are the horrifying true stories of serial murder from across the globe.