Michael Ryan
Michael Ryan was a British mass murderer responsible for the 1987 Hungerford massacre in England. Armed with multiple firearms, he carried out a series of shootings across the town, killing numerous victims. Ryan ultimately died by suicide following a police standoff. The incident led to significant changes in UK gun laws and remains one of the most impactful mass shootings in British history.
Andrew Kehoe
Andrew Kehoe was an American mass murderer responsible for the 1927 Bath School disaster in Michigan, one of the deadliest school attacks in U.S. history. He used explosives to destroy a school building, resulting in numerous deaths. Kehoe carried out the attack following financial difficulties and grievances with local authorities. He died in a suicide bombing at the scene, making the case one of the earliest large-scale acts of domestic terrorism in the United States.
Mark Barton
Mark Barton was an American mass murderer responsible for the 1999 Atlanta day trading office shootings. He killed multiple people at two offices after earlier murdering members of his own family. Barton later died by suicide, ending a multi-day manhunt. The case shocked the public and raised concerns about workplace violence and financial stress-related crimes.
Dean Corll
Dean Corll, known as the "Candy Man," was an American serial killer responsible for the murders of numerous boys and young men in Texas during the early 1970s. He worked with accomplices to lure and kill victims. Corll was killed by one of his accomplices before he could be arrested. The case became one of the most infamous serial murder investigations in U.S. history.

Elliot Rodger
Elliot Rodger was an American mass murderer responsible for the 2014 Isla Vista killings in California. He carried out a planned multi-location attack targeting individuals in a university community. He killed six people and injured others before dying by suicide at the scene.

Jim Jones
Jim Jones was an American cult leader and founder of the Peoples Temple, best known for orchestrating the mass murder-suicide in Jonestown, Guyana, in 1978. He established a following based on religious and social ideals, eventually relocating his group to a remote settlement where he exerted extreme psychological control over members. Jones’ leadership became increasingly authoritarian and paranoid, culminating in the deaths of over 900 people, including children, after he directed followers to consume a poisoned drink. The incident remains one of the largest mass deaths in modern history and cemented Jones as one of the most infamous cult leaders of all time.

Andrew Cunanan
Andrew Cunanan was an American spree killer responsible for a series of murders across multiple U.S. states in 1997. His crimes unfolded over several months and involved both known associates and opportunistic victims, culminating in the high-profile murder of fashion designer Gianni Versace. Cunanan became one of the most wanted fugitives in the United States during the manhunt that followed. His killing spree ended when he died by suicide in July 1997 before he could be captured and tried.

Charles Whitman
Charles Whitman was an American mass murderer responsible for the 1966 University of Texas tower shooting in Austin. Prior to the attack, he killed members of his family before carrying out a public shooting that resulted in multiple deaths and injuries. The incident became one of the earliest widely documented mass shootings in modern U.S. history. Whitman was killed by police during the attack, ending the event.