Former German hospital nurse Niels Hoegel, who was handed a life sentence Thursday for murdering 85 patients in his care, is believed to be the most prolific serial killer in the country’s post-war ...

With how fascinated Americans are with serial killers, you'd think that the worst of the worst come from the United States. However, that country doesn't even make the top ten. Chances are, you've ...

One of the UK's most famous and feared serial killers, Dennis Nilsen, formed an unusual friendship in the last years of his life. After reading a true crime book that had been recommended to her by a ...

New York's most prolific known serial killer offered some theories about the identity of the state's most recent serial killer today, as news broke that the culprit had reportedly confessed to the ...

Many outrageous and twisted true crime stories are linked to Palm Beach County but what about the worst of the worst — serial killers? This type of killer, defined by the FBI as a person who kills at ...

Editor’s Note, 01/06/2026: This article was originally published in 2016. It has been revised and updated to include more current information. Serial killers continue to capture the attention of ...

Ex-Russian policeman Mikhail Popkov, found guilty Monday of 56 murders while already in jail for 22, is one of the most prolific serial killers of recent times. Here is a recap of some of the others, ...