Can the unique bond between twins take a dark turn? Discover five cases of criminal twin duos, their exploits and how some managed to evade justice.

A guide to understanding the differences between 'spree', 'mass' and 'serial' killers

Natural Born Killer is the definitive story of how the police stopped Vincent Stanford, a potential serial killer, in his tracks

Discover how school cleaner Vincent Stanford was found guilty of murder, despite trying to pin it on his twin brother who shared the same DNA

A small town in Australia is shocked when a well liked school teacher disappears.