“Yes; I have been with Laura to Hazlewood often since I came here. I have been in Launcelot Darrell’s rooms.”

“And have you seen nothing there? no book, no letter; no scrap of evidence that might make one link in the story of this man’s life?”

“Nothing—nothing particular. He has some French novels on a shelf in one corner of his sitting-room.”

“Yes; but the possession of a few French novels scarcely proves that he was in Paris in the year ’53. Did you look at the titles of the books?”

“No; what could I have gained by seeing them?”

“Something, perhaps. The French are a volatile people. The fashion of one year is not the fashion of another. If you had found some work that made a furore in that particular year, you might have argued that Launcelot Darrell was a flâneur in the Galerie d’Orleans, or on the Boulevard, where the book was newly exhibited in the shop-windows. If the novels were new ones, and not Michel Lévy’s eternal reprints of Sand and Soulié, Balzac and Bernard, you might have learnt something from them. The science of detection, Mrs. Monckton, lies in the observation of insignificant things. It is a species of mental geology. A geologist looks into the gravel pit, and tells you the history of the creation; a clever detective ransacks a man’s carpet-bag, and convicts that man of a murder or a forgery.”

“I know I have been very stupid,” Eleanor murmured, almost piteously.

“Heaven forbid that you should ever be very clever in such a line as this. There must be detective officers; they are the polished bloodhounds of our civilized age, and very noble and estimable animals when they do their duty conscientiously: but fair-haired young ladies should be kept out of this galère. Think no more of this business, then, Eleanor. If Launcelot Darrell was the man who played écarté with your father on the 11th of August, ’53, I’ll find a proof of his guilt. Trust me to do that.”

“I will trust you, Richard.”

Mrs. Monckton held out her hand with a certain queenliness of gesture, as if she would thereby have ratified a bond between herself and her old friend; and as the flower of bygone chivalry were wont to vow the accomplishment of great deeds on the jewelled hilt of a cross-handled sword, so Richard Thornton, bending his honest head, swore allegiance upon the hand of Gilbert Monckton’s young wife.