The Day of Temptation by William le Queux

On the same night as the Doctor and his guest were dining in the remote rural village, the express which had left Paris at midday was long overdue at Charing Cross. Presently a troop of porters assembled and folded their arms to gossip, Customs officers appeared, and at last the glaring headlights of the express were seen slowly crossing the bridge which spans the Thames. Within a couple of minutes all became bustle and confusion. The pale faces and disordered appearance of alighting passengers told plainly how rough had been the passage from Calais. Many were tweed-coated tourists returning from Switzerland or the Rhine, but there were others who, by their calm, unruffled demeanour, were unmistakably experienced travellers.

Among the latter was a smart, military-looking man of not more than thirty-three, tall, dark, and slim, with a merry face a trifle bronzed, and a pair of dark eyes beaming with good humour. As he alighted from a first-class carriage he held up his hand and secured a hansom standing by, then handed out his companion, a well-dressed girl of about twenty-two, whose black eyes and hair, rather aquiline features and sun-browned skin, were sufficient evidence that she was a native of the South. Her dress, of some dark blue material, bore the stamp of the first-class costumier; attached to her belt was the small satchel affected by foreign ladies when travelling; her neat toque became her well; and her black hair, although a trifle awry after the tedious, uncomfortable journey, still presented an appearance far neater than that of other bedraggled women around her.