Santa Clara County prosecutors warn of a potential serial killer after 28-year-old Marcelino Castro confessed to two murders in San Jose. Castro led police to two bodies—one buried near Tamien Station and another wrapped in a tent near the Guadalupe River Trail.

Candice DeLong is a former FBI agent and profiler who has interviewed dozens of female killers. Presented by the new Hulu original series "Furious."

An alleged serial killer linked to at least 16 murders in Brazil has been found clutching a toddler while dressed as a woman.

A ruthless serial killer was moving across the American Midwest, leaving behind a growing trail of murders, kidnappings, and fear. With few leads and mounting pressure, the FBI and local authorities launched a desperate race against time to identify the suspect before he could strike again.

Evolutionary psychologist Marissa Harrison discusses research suggesting that female serial killers can differ substantially from the stereotypical male serial killer. In the dataset she describes, women were more likely to target people familiar to them or vulnerable individuals under their care,

Find out more about the murders linked to RoboCop Killer Nathaniel White and how he was finally caught in a case profiled on Oxygen's Unknown Serial Killers of America.

Prosecutors played jail calls in the competency trial of alleged serial killer Wesley Brownlee to show he is fit to stand trial.

Fredrick Scott was found guilty of four counts of first-degree murder in a series of killings along Indian Creek a decade ago.