The day had been hot and stifling in London--one of those blazing days when the tar on the roadway perfumes the air, the dry pavements reflect back the heat into one's face, and the straw-hatted Metropolis--or the portion of it that is still in town--gasps and longs for the country or the sea. The warm weather was nearly at an end, and most holiday-makers were back again. London's workers had had their annual fortnight long ago, and had nearly forgotten it, and now only principals were away golfing, taking waters at Harrogate, Woodhall Spa, or in the Scotch hydros, or perhaps travelling on the Continent. From the high-up windows in Shaftesbury Avenue, close to Piccadilly Circus, Ralph Ansell looked down upon the busy traffic of motor-buses, taxis, and cars, the dark-red after-glow shining full upon his keen, clean-shaven face. He was already dressed to go out to dinner, and as he stood in his cosy bachelor rooms--a pleasant, artistic little place with soft crimson carpet, big, comfortable, leather arm-chairs, and a profusion of photographs, mostly of the fair sex, decorating mantelshelf and walls--his brows were narrowed and he blew big clouds of cigarette smoke from his lips. Suddenly the door opened and a man, shorter and rather thick-set, also in evening clothes, entered. He was evidently French, and possessed neither the good looks nor the elegance of Ansell. "Ah! my dear Adolphe!" Ralph cried in French, springing forward to welcome him. "I hardly expected you yet. Your train from Paris was not late--eh? Well, how goes it?" "Infernally hard up--as usual," was his visitor's reply, as he tossed his black overcoat on to the couch, flung his soft felt hat after it, and then sank into a chair. "Why all this emergency--eh?" The man who spoke was of low type, with black, rather curly hair, sharp, shrewd eyes like his friend's, ears that lay slightly away from his head, and a large, rather loose, clean-shaven mouth. Between his eyes were three straight lines, for his brow wore a constant look of care and anxiety. He did not possess that careless, easy, gentlemanly air of Ansell, but was of a coarser and commoner French type, the type one meets every day in the Montmartre, which was, indeed, the home of Adolphe Carlier. Ansell walked to the door, opened it as if to ascertain there was no eavesdropper, and, closing and locking it, returned to his friend's side. "I sent for you, my dear friend, because I want you," he said, in a low voice, gazing straight at him. "Anything good?" asked the other, stretching out his legs and placing his clasped hands behind his head wearily. "Yes, an easy job. The usual game." "A jeweller's?" Ansell nodded in the affirmative. "Where?" "Not far from here." "Much stuff?" "A lot of good stones." "And the safe?" "Easy enough with the jet," Ansell answered. "You've brought over all the things, I suppose?"