
An in-depth look at some of the world's most dangerous murderers.

Stuart Campbell is convicted for the murder of his 15-year-old niece in 2002, even though her body has never been found.

A profile of Richard Roszkowski, the Connecticut triple-murderer who killed his ex-girlfriend, her nine-year-old daughter and another man in a brutal attack in 2006.

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.

Billy Dunlop killed Julie Hogg in 1989 but was acquitted after two failed trials.