Gary Heidnick's crimes helped inspire Buffalo Bill's character in 'Silence of the Lambs.' We spoke with the killer and self-described pastor's defense lawyer, Charles Peruto, Jr., about what it was like representing one of Philadelphia's most infamous criminals.

In December 2020, a team of civilian codebreaker broke one of the unknown killer's messages after 51 years.

In the 1960s, an unidentified serial killer terrorized London sex workers.

Posthumous DNA testing proved what Roger Keith Coleman repeatedly denied—that the Virginia man raped and murdered his sister-in-law in 1981.

After the Golden State Killer's arrest in 2018, dozens of rape victims learned their assaults weren't isolated incidents but the work of a serial killer. Read how many survivors bonded through mutual trauma.

Shayna Hubers shot and killed her boyfriend, Ryan Poston, claiming it was self-defense. But at the murder scene, there were few indications of a domestic disturbance. Read more about this bizarre case.

Peter Sutcliffe had the makings of a serial killer before he claimed his first victim.

An episode of 'Killer Cases' focuses on a mysterious triple murder in Pensacola that brought whispers of black magic.

Florida mom Casey Anthony lied to investigators about the 2008 disappearance of her 2-year-old daughter Caylee Anthony for weeks. We've compiled a list of some of her most questionable statements.

Nearly 20 years ago, retired NYPD detectives started tracking the suspicious drownings of young men across the country.

While her husband and daughters were out of state, Dr. Teresa Sievers was murdered. 'This was almost the perfect crime,' says prosecutor Cynthia Ross. 'There was absolutely no trace evidence.'

Lisa McVey was 17 years old when she was abducted, beaten and raped by a serial killer—and managed to survive. We spoke with McVey, now a master deputy in the Hillsborough County (Florida) Sheriff's Office, about how she outsmarted her kidnapper, Bobby Joe Long.

We spoke with Joni Johnston, a forensic psychologist, to explore the ancient legacy of poisonings, the psychological profile of a homicidal poisoner and common myths and misconceptions about those who poison.

Inconsistencies in a victim's story often lead to skepticism.

We spoke with legendary FBI profiler John Douglas about how a childhood injury may have pushed Joseph Paul Franklin to serial murder.

Wuornos sold sex to survive—ultimately killing seven men.

Parents might not report their missing child for a myriad of reasons: because they are the perpetrator, immigration concerns and more.

The chief suspect—her estranged husband—took his own life.

On December 28, 1956, the Grimes sisters, 15 and 12, left home to watch heartthrob Elvis Presley in Love Me Tender in Chicago. Six decades later, their inexplicable murder remains unsolved.

Gein was notorious for his fascination with women’s body parts.