“But one important point escaped us both. It was one which ought to have opened our eyes to Larsan. Do you remember the bamboo cane? I was surprised to find Larsan had made no use of that evidence against Robert Darzac. Had it not been purchased by a man whose description tallied exactly with that of Darzac? Well, just before I saw him off at the train, after the recess during the trial, I asked him why he hadn’t used the cane evidence. He told me he had never had any intention of doing so; that our discovery of it in the little inn at Epinay had much embarrassed him. If you will remember, he told us then that the cane had been given him in London. Why did we not immediately say to ourselves: ‘Fred is lying. He could not have had this cane in London. He was _not_ in London. He bought it in Paris’? Then you found out, on inquiry at Cassette’s, that the cane had been bought by a person dressed very like Robert Darzac, though, as we learned later, from Darzac himself, it was not he who had made the purchase. Couple this with the fact we already knew, from the letter at the poste restante, that there was actually a man in Paris who was passing as Robert Darzac, why did we not immediately fix on Fred himself? “Of course, his position at the Sûreté was against us; but when we saw the evident eagerness on his part to find convicting evidence against Darzac, nay, even the passion he displayed in his pursuit of the man, the lie about the cane should have had a new meaning for us. If you ask why Larsan bought the cane, if he had no intention of manufacturing evidence against Darzac by means of it, the answer is quite simple. He had been wounded in the hand by Mademoiselle Stangerson, so that the cane was useful to enable him to close his hand in carrying it. You remember I noticed that he always carried it? “All these details came back to my mind when I had once fixed on Larsan as the criminal. But they were too late then to be of any use to me. On the evening when he pretended to be drugged I looked at his hand and saw a thin silk bandage covering the signs of a slight healing wound. Had we taken a quicker initiative at the time Larsan told us that lie about the cane, I am certain he would have gone off, to avoid suspicion. All the same, we worried Larsan or Ballmeyer without our knowing it.” “But,” I interrupted, “if Larsan had no intention of using the cane as evidence against Darzac, why had he made himself up to look like the man when he went in to buy it?”