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

In August 1990, Danny Rolling murders five college students in Gainesville, Fla., home of the University of Florida, and creates gruesome crime scenes that are designed to shock.

In 1987, American serial killer Daniel Siebert is given two death sentences for killing vulnerable people across America.

Dublin man Eric Locke refuses to accept it when Sonia Blount, a mother of one, ends their relationship.

Dennis Rader, known to the world as the BTK Killer, killed ten people, including young children, between 1974 and 1991 in Wichita, Kansas.