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

Westley Allan Dodd's escalating predation ended after he murdered three young boys.

Keith Jesperson, known as the Happy Face Killer, brutally killed at least eight women across five American states in the early 1990s.

A traffic stop revealed a body, exposing Joel Rifkin's deadly spree against vulnerable women.

Pawel Relowicz rapes and kills 21-year-old Hull student Libby Squire in a case that made headlines around the UK.