The Economic Times

In 1856, a 23-year-old widow became Americas first female private detective. Five years later, she helped protect former US president Abraham Lincoln

Kate Warne became America's first female private detective in 1856. She successfully infiltrated criminal circles using various disguises. Warne later uncovered a plot to assassinate President-elect Abraham Lincoln. She then accompanied Lincoln on a secret train journey to Washington. Her work challenged societal norms and opened doors for women in investigations.