There, she learned of the various plots to kill Lincoln. The most plausible one, according to Pinkerton’s account, was a plan to attack Lincoln while he was getting into the carriage that would take him from his Pennsylvania train when it arrived at Calvert Street Station, across the city and to his Washington-bound train.
Pinkerton tried to persuade Lincoln to cancel all his stops — especially the one in Baltimore — but Lincoln insisted on keeping his schedule, which included dinners and speeches and a flag-raising over Independence Hall in Philadelphia. The man who called himself Lincoln’s bodyguard, Ward Hill Lamon, tried to give the president-elect a revolver and Bowie knife for protection. Pinkerton was horrified and wouldn’t have it.
When Lincoln’s future secretary of state, William H. Seward, independently heard about the Baltimore plot and urged Lincoln to believe it, the president-elect finally listened to Pinkerton and Warne and went along with the plan they hatched to get Lincoln through Baltimore.
The president wore an old overcoat, a soft hat and possibly a shawl over his shoulders. The accounts vary.
In her report about that night, filing it as “M.B.” (Mrs. Barley), Warne described how she bought four tickets in Philadelphia for a sleeping berth to Washington via Baltimore and set out ahead of time to secure them. They were unlike any she’d seen before: not reserved by ticket, but rather, a first-come, first-served free-for-all. So she tipped the conductor a half-dollar to keep the four she had selected unoccupied as she waited for Lincoln, Lamon and Pinkerton.
The president-elect was friendly, she wrote, even though he was surprised that a woman, rather than a cavalry squad, would whisk him through Baltimore.
“I believe it has not hitherto been one of the prerequisites of the presidency to acquire in full bloom so charming and accomplished a female relation,” Lincoln told her.
Her description of the president-elect in her report was not so generous:
“Mr. Lincoln is very homely, and so very tall that he could not lay straight in his berth,” she wrote.
She stayed awake, by Lincoln’s side, the entire night. Lincoln was safely delivered to Washington.
Telegraphs from Pinkerton (known as “Plums”) confirmed the success: “Plums has Nuts.” Yes, Lincoln wasn’t Eagle or POTUS. His code name for this operation was “Nuts.” When Waldo Porter Johnson, one of the peace delegates gathered in Washington to try to avert a civil war, heard the news, he blurted: “How the devil did he get through Baltimore?”
Warne inspired Pinkerton to hire scores of female detectives, making Warne the superintendent of all of them.
During the Civil War, Pinkerton and Warne went undercover in Southern society, posing as a partying couple and gathering intelligence for the Union. After the war, Warne continued her adventures, going undercover as a fortune teller or befriending a murder suspect’s wife to solve cases and make headlines.
Warne died in 1868 of pneumonia and is buried in the Pinkerton family plot. Her name is misspelled on her tombstone as “Warn.” She was either 34 or 35; her birth month is unknown.
“She was a marked woman amongst her sex, with a large, active brain, great mental power, and excellent judge of character, and possessed of a strong, active vitality,” said an obituary in the Democratic Enquirer.
“In her career while she lived she developed that her sex could do much more than had ever before been ascribed to their sphere,” the obituary reads. “She leaves a void in the female detective department which it will be difficult ever to fill. As she lives, so she died, a strong, pure, devoted woman.”
Lincoln, by then, was already gone: fatally shot by John Wilkes Booth inside Ford’s Theatre on April 14, 1865, just weeks after his second inauguration. This time, it was his wife, Mary Todd Lincoln, by his side, not Kate Warne.