 Warne remained in Baltimore as the sleeping cars with Lincoln on board were shifted to another train, which arrived in Washington around 6 a.m.

During the American Civil War, Allan Pinkerton and Kate Warne were used as a covert war intelligence-gathering bureau.Warne could easily penetrate into Southern social gatherings.She said that women are most useful in worming out secrets in many places which would be impossible for a male detective.