Davis was the last man in the world to successfully disguise himself.

He had a large, coarse mouth, that made him remembered by all who had ever seen him.

Frank recognized him instantly and said: "You are Lieutenant Davis ?" Davis replied: "You are totally mistaken, sah, I am -- ---." Frank insisted that he was right.

Davis fumed and blustered, but though Frank was small, he was as game as a bantam rooster, and he gave Davis to understand that there had been a vast change in their relative positions; that the one, while still the same insolent swaggerer, had not regiments of infantry or batteries of artillery to emphasize his insolence, and the other was no longer embarrassed in the discussion by the immense odds in favor of his jailor opponent.
After a stormy scene Frank called in the assistance of some other soldiers in the car, arrested Davis, and took him to Camp Chase--near Columbus, O.,--where he was fully identified by a number of paroled prisoners.

He was searched, and documents showing the nature of his mission beyond a doubt, were found upon his person.
A court martial was immediately convened for his trial.
This found him guilty, and sentenced him to be hanged as a spy.
At the conclusion of the trial Frank stepped up to the prisoner and said: "Mr.Davis, I believe we're even on that coat, now." Davis was sent to Johnson's Island for execution, but influences were immediately set at work to secure Executive clemency.