Richard Cottingham claims he murdered dozens of women. Now, with the help of a cop, a serial killer expert, and even the daughter of one of his victims, his crimes are coming to light
Anthony Robinson, already arrested on two first-degree murder charges, is a "person of interest" following discovery of two more victims
Investigators worked with a DNA research firm to ID the remains of Clara Birdlong, and serial killer Samuel Little is the prime suspect in her death
Infamous serial killer dies of natural causes at California hospital while awaiting execution for 1979 murder of 12-year-old girl
While a former butcher awaits trial for a gruesome murder, police discover evidence of at least 17 more possible victims beneath his home
He became known as the killer clown — but 'John Wayne Gacy: Devil in Disguise' shows there was a lot more to the Chicagoland serial killer's story
Six-part Peacock series John Wayne Gacy: Devil in Disguise arrives Thursday
DeFeo confessed to murdering six family members at their Long Island home in 1974
Billy Jensen and Alexis Linkletter's new investigative podcast 'Unraveled: Long Island Serial Killer' looks at the case of disgraced police chief James Burke — and asks what the Suffolk County Police Department may have been hiding
By chance, a detective caught episode of Rodney Alcala as contestant on game show, which ultimately led to serial killer's arrest
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