The morning after Robert had told me all these things about his uncle, while he waited for him (and waited, as it happened, in vain), as I was coming by myself past the Casino on my way back to the hotel, I had the sensation of being watched by somebody who was not far off. I turned my head and saw a man of about forty, very tall and rather stout, with a very dark moustache, who, nervously slapping the leg of his trousers with a switch, kept fastened upon me a pair of eyes dilated with observation. Every now and then those eyes were shot through by a look of intense activity such as the sight of a person whom they do not know excites only in men to whom, for whatever reason, it suggests thoughts that would not occur to anyone else--madmen, for instance, or spies. He trained upon me a supreme stare at once bold, prudent, rapid and profound, like a last shot which one fires at an enemy at the moment when one turns to flee, and, after first looking all round him, suddenly adopting an absent and lofty air, by an abrupt revolution of his whole body turned to examine a playbill on the wall in the reading of which he became absorbed, while he hummed a tune and fingered the moss-rose in his buttonhole. He drew from his pocket a note-book in which he appeared to be taking down the title of the performance that was announced, looked two or three times at his watch, pulled down over his eyes a black straw hat the brim of which he extended with his hand held out over it like a visor, as though to see whether some one were at last coming, made the perfunctory gesture of annoyance by which people mean to shew that they have waited long enough, although they never make it when they are really waiting, then pushing back his hat and exposing a scalp cropped close except at the sides where he allowed a pair of waved "pigeon's-wings" to grow quite long, he emitted the loud panting breath that people give who are not feeling too hot but would like it to be thought that they were. He gave me the impression of a "hotel crook" who had been watching my grandmother and myself for some days, and while he was planning to rob us had just discovered that I had surprised him in the act of spying; to put me off the scent, perhaps he was seeking only, by his new attitude, to express boredom and detachment, but it was with an exaggeration so aggressive that his object appeared to be--at least as much as the dissipating of the suspicions that I must have had of him--to avenge a humiliation which quite unconsciously I must have inflicted on him, to give me the idea not so much that he had not seen me as that I was an object of too little importance to attract his attention. He threw back his shoulders with an air of bravado, bit his lips, pushed up his moustache, and in the lens of his eyes made an adjustment of something that was indifferent, harsh, almost insulting. So effectively that the singularity of his expression made me take him