Since the first recorded U.S. case of mass murder in 1949, massacres have been increasing each decade, with workplace violence taking the lead as the most common form. The psychology of the killers, however, differs from that of spree, serial, or situational murderers. Based on a review of mass murders, the author argues that the red flags of a developing mass killer are obvious and predictable, and people who learn to recognize them may be able to defuse a potentially violent situation before it occurs. Using details from various cases, she examines the different kinds of mass murders, from visionary to family to workplace, and the distinct psychological dynamics of the different types of murders.

Public mass killings are becoming more common. Though the chances of being harmed or killed in a mass shooting are slim, each incident affects the public's sense of safety. There are many myths and falsehoods concerning mass murderers. As a result, the public lacks reliable knowledge about the reasons behind such killings, preventing the development of comprehensive strategies to mitigate the violence. Written by a mental health therapist with thirty years of clinical experience in violence prevention, this book clarifies the realities of mass killings. Using research from forensic psychology, it provides a foundation for understanding the "pathway to violence" identified in the personal histories of many mass murderers. Drawing from criminology, neuroscience and developmental and social psychology, the author makes the case that we are all capable of creating a safer society.

Can you predict killing sprees? What do mass killers have in common? Why do so many of them write manifestos online and what do these tell us? These are some of the questions David J. Krajicek seeks to answer in Mass Killings, on a topic that is becoming increasing urgent and desperate. In recent decades, mass shootings worldwide have increased in their savagery and frequency. Nearly all mass killers are male - and many of them are bound together by misogyny, misanthropy, and racism. They do not just "snap." They plan their assaults for months or years, drawing up detailed battle plans, and accumulating weaponry. They document the process in journals or videos online, understanding that they are leaving evidence which will help the marquee lights of their futile crimes burn brighter and longer. Krajicek shows the commonalities between mass shooters, and describes the psychopathic process that leads these troubled men to commit atrocities. Mass killers feed off each other's words and deeds, and it's crucial to be able to read the signals they give out to prevent future tragedies.

There are many cultural myths about serial killers, often propagated even by mental health professionals. Many assume there is a profile of a serial killer, that serial killers always go for the same victim type or always use the same MO, that they are more clever than ordinary people, and that they are inevitably charming and attractive. The truth is not as simple as that. There are different types of serial killers, and while there are many books that discuss the serial killer phenomenon especially in relationship to victim types or context, researchers have not yet been able to come up with a definition, or type, that covers the broad spectrum of serial killers and their complex psychological dynamics. Ramsland looks at the variety of serial killer types, illustrating that it is difficult to accurately depict these elusive, intriguing, and dangerous killers. There are many cultural myths about serial killers, often propagated even by mental health professionals. Many assume there is a profile of a serial killer, that serial killers always go for the same victim type or always use the same MO, that they are more clever than ordinary people, and that they are inevitably charming and attractive. The truth is not as simple as that. There are different types of serial killers and while there are many books that discuss the serial killer phenomenon especially in relationship to victim types or context, researchers have not yet been able to come up with a definition, or type, that covers the broad spectrum of serial killers and their complex psychological dynamics. Ramsland looks at serial killer types, illustrating that it is difficult to accurately depict these elusive, intriguing, and dangerous killers. This book examines a variety of serial killers, from sexual predators to psychotic killers, from murder teams to odd eccentric stalkers, in order to present the distinct psychological dynamics that set serial killers apart from other violent murderers. Among the motives addressed are lust, control, glory, profit, thrill, delusions, rage, the desire for company, the need to please a partner, and even murder as an intellectual exercise. Serial killers live double lives, hiding their violence even from those who live with them, so along with a study of motives are chapters devoted to how close associates have described killers, including parents, siblings, co-workers, lovers, and survivors. There is no profile of a serial killer, and this book establishes that in vivid and frightening detail.

Ten years after the school massacre at Columbine High School in Colorado, school shootings are a new and alarming epidemic. While sociologists have attributed the trigger of violence to peer pressure, such as bullying and social isolation, prominent psychologist Peter Langman, argues here that psychological causes are responsible. Drawing on 20 years of clinical experience, Langman offers surprising reasons for why some teens become violent. Langman divides shooters into three categories, and he discusses the role of personality, trauma, and psychosis among school shooters. From examining the material evidence of notorious school shooters at Columbine and Virginia Tech to addressing the mental states of the violent youths he treats, Langman shows how to identify early signs of homicide-prone youth and what preventive measures educators, parents and communities can take to protect themselves from the tragedy.

"Groundbreaking." ―Rachel Louise Snyder, bestselling author of No Visible Bruises An examination of the phenomenon of mass shootings in America and an urgent call to implement evidence-based strategies to stop these tragedies Winner of the 2022 Minnesota Book Award Using data from the writers’ groundbreaking research on mass shooters, including first-person accounts from the perpetrators themselves, The Violence Project charts new pathways to prevention and innovative ways to stop the social contagion of violence. Frustrated by reactionary policy conversations that never seemed to convert into meaningful action, special investigator and psychologist Jill Peterson and sociologist James Densley built The Violence Project, the first comprehensive database of mass shooters. Their goal was to establish the root causes of mass shootings and figure out how to stop them by examining hundreds of data points in the life histories of more than 170 mass shooters—from their childhood and adolescence to their mental health and motives. They’ve also interviewed the living perpetrators of mass shootings and people who knew them, shooting survivors, victims’ families, first responders, and leading experts to gain a comprehensive firsthand understanding of the real stories behind them, rather than the sensationalized media narratives that too often prevail. For the first time, instead of offering thoughts and prayers for the victims of these crimes, Peterson and Densley share their data-driven solutions for exactly what we must do, at the individual level, in our communities, and as a country, to put an end to these tragedies that have defined our modern era.

In 2004, Charles Cullen was arrested and charged in the deaths of more than 30 patients in his care. Crossing several jurisdictions in seven counties in New Jersey and Pennsylvania, he was stopped after a fifteen-year spree at ten institutions. While many people do not think of healthcare workers as serial killers, their profession is disproportionately represented among the serial killer population, and they tend to be more prolific than other serial killers, having more opportunities, better cover, and easy alibis. Healthcare professionals who kill have learned how to exploit the atmosphere of trust in the healthcare community and to hasten deaths that may go unnoticed in an already vulnerable arena. This book delves into the world of the healthcare serial killer, looking at the special characteristics of the different groups of murderers, the motives, the methods, and the outcomes. Crime specialists have long suspected that many healthcare serial killers have gone undetected. Because it is easier to cover up their crimes, it is harder to uncover that a crime has even been committed. Here, Ramsland identifies some of the warning signs that a serial killer may be on the loose in a healthcare setting. Further, she offers suggestions for reform in the healthcare and criminal justice communities that would help identify potential killers before they have a chance to strike, or strike again. Using numerous real-life cases in every chapter, she provides a fuller picture of this most deadly type of serial killer and helps readers understand how they work, and how they can be stopped.