Serial Killers

Former Suffolk County Chief of Detectives Dominick Varrone theorizes that the killer was very selective about the women he preyed upon.

Billy Kipkorir Chemirmir now faces 17 murder charges in Texas, though he's been linked to a total of 24 deaths.

Authorities in Suffolk County, New York hope the images trigger new tips to help them catch the elusive Long Island Serial Killer.

Jeremy Harris, who is accused in the murder last week of his ex-girlfriend’s father in Celina, Texas, is now connected to a trio of separate killings.

Former FBI agent John Douglas used his profiling expertise to help investigators pinpoint where Joseph Paul Franklin would show up next.

Former FBI unit chief John Douglas breaks down some of the methods he used to profile notorious killers. 

Psychiatrist Dr. Dorothy Lewis believes there is some evidence to suggest that serial killer Ted Bundy had dissociative identity disorder, formerly known as multiple personality disorder.

Serial killer Arthur Shawcross, whose drive to murder was analyzed by Dr. Dorothy Lewis, had been convicted in the deaths of two children in New York before ultimately securing parole and killing more.

Serial killer Ted Bundy revealed a secret about his childhood to Dr. Dorothy Lewis, who often questioned the concept of evil, one day before his execution.

Dr. Dorothy Lewis testified at many high-profile murder trials, often claiming that the killers were victims of abuse and brain damage.