In 1856, when Kate Warne went to see Allan Pinkerton, only men were detectives. But Kate convinced Allan to hire her for his detective agency. She explained that she could worm out secrets where men could not go in disguise as a society lady Join Kate on her most important mission to thwart a plot to assassinate Abraham Lincoln on the way to his inauguration."
How Kate Warne Saved President Lincoln
The Story Behind the Nation's First Female Detective