Criminologists, psychologists, journalists and detectives examine the crimes of Jesse Matthew, a taxi driver who brutally murdered two college students.
Experts examine the brutal crimes of William Devin Howell, who preyed on drug-addicted sex workers. He was convicted of murdering seven people in 2003.
Experts examine the violent crimes of James Fairweather. Fascinated with serial killers, he was 15 years old when he stabbed two people to death in 2014.
Mark Martin was on a macabre mission, declaring that he wanted to become Nottingham's first serial killer. Between December 2004 and January 2005 he strangled to death three young homeless women.
An examination of the crimes of Shawn Grate, who after being convicted of two murders in Ashland County, Ohio confessed in a press interview to three other murders.
