7. Anthrax Attack Victims
Remember the US Anthrax attacks of 2001? That bizarre string of cases is still unsolved. In the autumn of 2001, letters containing deadly spores of anthrax were mailed to the offices of several media houses, as well as to the houses of prominent democratic senators.
The attack killed 5 people and infected 17 others – but no one knew who or why they did it. This investigation has been called by the FBI one of the biggest and he most complexes in the history of law enforcement.