The doorman could not make up his mind offhand whether Mullinix was to be classified as a well-dressed mendicant or an indifferently dressed book agent; he was pretty sure, though, that the stranger fell somewhere within the general ban touching on dubious persons having dubious intentions. This doubt on the part of the doorman was rather a compliment to Mullinix, considering Mullinix's real calling. For Mullinix resembled neither the detective of fiction nor yet the detective of sober fact, which is exactly what the latter usually is—a most sober fact; sober, indeed, often to the point of a serious and dignified impressiveness. This man, though, did not have the eagle-bird eye with which the detective of fiction so often is favoured. He did not have the low flattened arches—frontal or pedal—which frequently distinguish the bona-fide article, who comes from Headquarters with a badge under his left lapel and a cigar under his right moustache to question the suspected hired girl. About him there was nothing mysterious, nothing portentous, nothing inscrutable. He had a face which favourably would have attracted a person taking orders for enlarging family portraits. He had the accommodating manner of one who is willing to go up when the magician asks for a committee out of the audience to sit on the stage.
Not ten individuals alive knew of his connection with the Secret Service. Probably in all his professional life not ten others—outsiders—had ever appraised him for what he was. His finest asset was a gift of Nature—a sort of protective colouration which enabled him to hide in the background of commonplaceness and do his work with an assurance which would not have been possible had he worn an air of assurance. In short and in fine, Mullinix no more resembled the traditional hawkshaw than Miss Mildred Smith resembled the fashionable conception of a fashionable artist. She never gestured with an upturned thumb; nor yet made a spy-glass of her cupped hand through which to gaze upon a painting. She had never worn a smock frock in her life.
The smartest of smart tailor-mades was none too smart for her. Nothing was too smart for her, who was so exquisitely fine and well-bred a creature. She was wearing tailor-mades, with a trig hat to match, when she opened the door of her entry hall for Mullinix.
"Just going out, weren't you?" he asked as they shook hands.
"No, just coming in," she said. "I had only just come in when the hall man called me up saying you were downstairs."
"I had trouble getting him to send up my name at all," he said with a half smile on his face. "He insisted on knowing all about me and my business before he announced me. So I told him everything nearly—except the truth."
"I gathered from his tone he was a bit doubtful about you; but I was glad to get the word. This is the third time you've favoured me with a visit and each of the other times something highly exciting followed. Come in and let me make you a cup of tea, won't you? Is it business that brings you?"
"Yes," he said, "it's business."
They sat down in the big inner studio room; on one side of the fireplace the short, slow-speaking, colourless-looking man who knew the inner blackness of so many whited sepulchres; and on the other side, facing him from across the tea table, this small patrician lady who, having rich kinfolk and friends still richer and a family tree deep-rooted in the most Knickerbockian stratum of the Manhattan social schist, nevertheless chose to earn her own living; and while earning it to find opportunity for service to her Government in a confidential capacity. Not all the volunteers who worked on difficult espionage jobs through the wartime carried cards from the Intelligence Department.
"Yes," he repeated, "it's business—a bigger piece of business and a harder one and probably a more interesting one than the last thing you helped on. If it weren't business I wouldn't be coming here to-day, taking up your time. I know how busy you are with your own affairs."