“The doctor, if he’s a St. Luke’s man—”

“There is no doctor.”

It was six months since I had solved, or helped to solve, the mystery of the buckled bag for Mr. Patton. I had had other cases for him in the interval, cases where the police could not get close enough. As I said when I began this record of my crusade against crime and the criminal, a trained nurse gets under the very skin of the soul. She finds a mind surrendered, all the crooked little motives that have fired the guns of life revealed in their pitifulness.

Gradually I had come to see that Mr. Patton’s point of view was right; that if the criminal uses every means against society, why not society against the criminal? At first I had used this as a flag of truce to my nurse’s ethical training; now I flaunted it, a mental and moral banner. The criminal against society, and I against the criminal! And, more than that, against misery, healing pain by augmenting it sometimes, but working like a surgeon, for good.

I had had six cases in six months. Only in one had I failed to land my criminal, and that without any suspicion of my white uniform and rubber-soled shoes. Although I played a double game no patient of mine had suffered. I was a nurse first and a police agent second. If it was a question between turpentine compresses—stupes, professionally—and seeing what letters came in or went out of the house, the compress went on first, and cracking hot too. I am not boasting. That is my method, the only way I can work, and it speaks well for it that, as I say, only one man escaped arrest—an arson case where the factory owner hanged himself in the bathroom needle shower in the house he had bought with the insurance money, while I was fixing his breakfast tray. And even he might have been saved for justice had the cook not burned the toast and been obliged to make it fresh.

I was no longer staying at a nurses’ home. I had taken a bachelor suite of three rooms and bath, comfortably downtown. I cooked my own breakfasts when I was off duty and I dined at a restaurant near. Luncheon I did not bother much about. Now and then Mr. Patton telephoned me and we lunched together in remote places where we would not be known. He would tell me of his cases and sometimes he asked my advice.

I bought my uniforms that day and took them home in a taxicab. The dresses were blue, and over them for the street the St. Luke’s girls wear long cloaks, English fashion, of navy blue serge, and a blue bonnet with a white ruching and white lawn ties. I felt curious in it, but it was becoming and convenient. Certainly I looked professional.