In the 1960s, an unidentified serial killer terrorized London sex workers. The Hammersmith Nude Murders remains one of Britain's most infamous unsolved crimes.

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.

Peter Sutcliffe had the makings of a serial killer before he claimed his first victim and continued on a murderous spree that terrorized England for nearly five years.

Nearly 20 years ago, retired NYPD detectives started tracking the suspicious drownings of young men across the country after they discovered a graffiti smiley face near at least a dozen locations where they found bodies.

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

Having endured a violent and abusive childhood, Aileen 'Lee' Wuornos sold sex to survive—ultimately killing seven men. We spoke with feminist writer Phyllis Chesler about her motivation to help Wuornos's case.

It's an exceedingly rare group of people who escape the clutches of a serial killer—only to find their lives forever changed by the ordeal. Read what happened afterward to five survivors.

Eddie Seda, Matthew Milat and Michael Madison are just a handful of killers who claim to have been inspired by other killers.

A popular theory claims three childhood behaviors—animal cruelty, fire setting and persistent bedwetting—can indicate a serial killer in the making.