Laleham Villas proved to be an immensely long terrace of small two-story houses, each one exactly like the other, the only difference between them lying in the color of the front doors and the arrangement of the small strip of garden in front of each. The houses stretched away on either side in a vista of smoke-discolored yellow brick. The road was perfectly straight and, in the dull yellow atmosphere of the winter morning, unspeakably depressing. The abode of small clerks and employees, Laleham Villas had rendered up, an hour before, its daily tribute of humanity to the City-bound trains of the Great Eastern Railway. The Mackwayte’s house was plainly indicated, about 200 yards down on the right-hand side, by a knot of errand boys and bareheaded women grouped on the side-walk. A large, phlegmatic policeman stood at the gate. “You’ll like Marigold,” said the Chief to Desmond as they got out of the car, “quite a remarkable man and very sound at his work!” British officers don’t number detective inspectors among their habitual acquaintances, and the man that came out of the house to meet them was actually the first detective that Desmond had ever met. Ever since the Chief had mentioned his name, Desmond had been wondering whether Mr. Marigold would be lean and pale and bewildering like Mr. Sherlock Holmes or breezy and wiry like the detectives in American crook plays. The man before him did not bear the faintest resemblance to either type. He was a well-set up, broad-shouldered person of about forty-five, very carefully dressed in a blue serge suit and black overcoat, with a large, even-tempered countenance, which sloped into a high forehead. The neatly brushed but thinning locks carefully arranged across the top of the head testified to the fact that Mr. Marigold had sacrificed most of his hair to the vicissitudes of his profession. When it is added that the detective had a small, yellow moustache and a pleasant, cultivated voice, there remains nothing further to say about Mr. Marigold’s external appearance. But there was something so patent about the man, his air of reserve, his careful courtesy, his shrewd eyes, that Desmond at once recognized him for a type, a cast from a certain specific mould. All services shape men to their own fashion. There is the type of Guardsman, the type of airman, the type of naval officer. And Desmond decided that Mr. Marigold must be the type of detective, though, as I have said, he was totally unacquainted with the genus. “Major Okewood, Marigold,” said the Chief, “a friend