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

In 1991, the bodies of sex workers started being discovered in Detroit, Michigan.

After two couples were brutally murdered three years apart, both cases went cold for almost three decades.

In September 2007, 50-year-old Vietnamese immigrant Cuc Tran was raped and murdered while out on a run.

In 1992, Leslie Allen Williams was arrested after a witness saw him assaulting and abducting a woman.