The main question that forensic psychiatrist Richard Taylor has been asking throughout his career could sound like this: why do people kill? In his book, he discusses crimes with a sexual motive and those committed in a state of affect—financially motivated, psychotic, and mass killings, including child murder and murders connected with terrorism. This is a view from the inside into one of the rarest professions, as well as an attempt to unravel the motives of people who commit serious crimes. How is it decided what will happen to a person after an accusation? How does a forensic psychiatrist work with an offender, and what happens to those found not responsible? What can be done to prevent the repetition of tragic events? You will learn how a psychiatric assessment of an offender is carried out, as well as about high-profile cases in which the author participated as a forensic psychiatrist.