Serial killers are often wrapped in mythology, sensational headlines and stories that grow more extreme with every retelling.

Editor’s Note: This story contains discussions of rape or sexual assault that may be disturbing. Reader discretion is advised. If you or someone you know has been sexually assaulted, you can find help ...

Which countries have the most documented serial killers? The U.S. tops the ranking by a staggering margin with 3,803 identified cases.

More than 2,000 items belonging or connected to some 150 serial killers from around the globe feature in a chilling new exhibition ...

Add Yahoo as a preferred source to see more of our stories on Google. A new survey ranks Missouri as one of the nation's hottest spots of serial killer activity. The survey sought to answer: In the ...

While at least one serial killer has been identified in each U.S. state, some breed these notorious killers more than others. Washington state recently ranked among the deadliest “serial killer ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Which countries have produced the most serial killers since 1900? Explore data from Radford University and FGCU tracking global case numbers.