Scottish emigrant and abolitionist Allan Pinkerton founded America's first detective agency and successfully brought down some of the country's most ruthless criminals. But in 1874 he tried to ...

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Assassination attempt on Abraham Lincoln was prevented by the Pinkerton Detective Agency (Image via Beata Zawrzel/NurPhoto via Getty Images) The Pinkerton Detective Agency was the main topic of ...

Scottish emigrant and abolitionist Allan Pinkerton founded America's first detective agency and successfully brought down some of the country's most ruthless criminals. But in 1874 he tried to ...