
An in-depth look at some of the world's most dangerous murderers.
Billy Dunlop killed Julie Hogg in 1989 but was acquitted after two failed trials.
Jordan Monaghan kills his 24-day-old daughter Ruby on New Year's Day in January 2013.
Bobby Joe Long is on Florida's death row for abducting, sexually assaulting and murdering at least 10 women in the Tampa Bay area during an eight-month period in 1984.
Cary Stayner is a serial killer who murdered four women at Yosemite National Park and was the product of a uniquely tragic background; in 1972, Stayner's brother, Steven, was abducted by child molester Kenneth Parnell but Steven escaped.