Few figures illustrate the murky overlap between state power and political violence as concretely as Çatlı, who moved between ultranationalist street militancy and covert government work with apparent official sanction. His death in a 1996 car crash — alongside a senior police official and a member of parliament — produced the scandal known as the Susurluk affair, which exposed the depth of Turkey's "deep state" connections and forced a rare public reckoning with how far those networks extended.

His trajectory — from yeshiva student to convicted criminal to celebrated memoirist — made him one of interwar Poland's more unusual literary figures, and the criminal underworld he documented gave readers an unfiltered account of Jewish street life between the wars. What complicates any simple categorization is how his story ended: not in prison or obscurity, but leading a small resistance effort to save Torah scrolls from destruction in the opening weeks of the German occupation, killed for it in the earliest days of what would become a systematic annihilation.

What distinguished Pándy from many violent offenders was the sustained domestic concealment of his crimes — killings spread across four years, within his own family, in a household where he held religious authority. His victims included multiple former partners and children, and the investigation that eventually unraveled the case required cross-border cooperation between Belgian and Hungarian police years after the disappearances began. The discovery of additional unidentified remains in one of his properties suggests the full scope of his actions may never be precisely known.

A South African nurse whose case drew intense public attention during the early 1930s, de Melker was suspected of using poison across multiple deaths in her household — though the courts convicted her only of killing her own son, with the motive never satisfactorily established. The surrounding circumstances, including two deceased husbands and contested insurance and inheritance arrangements, kept the case legally and historically complex long after her execution. She remains one of the few women in South African history to have been hanged.

MacDonald operated in Australia's eastern cities during the early 1960s, targeting marginalized men — often homeless — in a series of attacks that shared a consistent and extreme pattern of violence. The murders stretched across Queensland and New South Wales before his capture in Melbourne, where he had been living under an assumed identity. His case drew significant attention from Australian law enforcement and press, and he remains one of the more studied figures in the country's criminal history for the duration of his evasion and the nature of his crimes.

Puca rose through the Nuova Camorra Organizzata from its earliest days in Poggioreale prison to become the organization's second-in-command under Raffaele Cutolo, one of the most powerful Camorra figures of the era. His career encompassed suspected murders, extortion, and the kind of institutional entanglement illustrated by the Tortora affair — a case in which a misread name in his agenda contributed to the wrongful imprisonment of a prominent television host. He was tried in the 1983 maxi-trials against the NCO and was eventually killed in a shootout in Sant'Antimo at thirty-three.

His thirteen-month campaign of random shootings across New York City's outer boroughs generated a level of public terror disproportionate to his six victims — sustained in part by taunting letters he sent to police and a tabloid press that amplified his chosen alias into something close to mythology. The "Son of Sam" case reshaped how American cities, police departments, and media institutions handle serial crime investigations, and New York State eventually passed legislation — "Son of Sam laws" — restricting convicted criminals from profiting off their own stories. His later admission that the demonic-dog explanation was fabricated left open the question of what, if any, coherent motive had driven the attacks.

His entrada through the southeastern United States left a trail of violence, enslavement, and disruption across dozens of Indigenous communities — consequences that outlasted the expedition itself and reshaped Native populations long before European settlement formally took hold in the region. The scale of the undertaking was matched by its brutality, as de Soto's forces seized food stores, took captives as guides and laborers, and attacked towns that resisted.