As well as he could Charles gave the gist of Duval's remarks, but as he warned the inspector, Duval had made so many vague references to that mysterious figure that he found it hard to recollect them all. But on one point his memory was perfectly clear: Duval believed that the only man who had ever seen the Monk's face had been murdered, and he knew that in trying to discover the Monk's identity he was running a great risk. "So much so," Charles said, "that he had taken to carrying a businesslike looking knife about with him."

"Yes, and that raises a question," Peter put in. "If he was murdered last night, there must have been a bit of a struggle. The fragment of skin proves that. And you can't chloroform a man without overpowering him first. If the Monk did it, why didn't Duval draw his knife? He must have had time, because as soon as he set eyes on the Monk he'd have been on his guard. The Monk can't have taken him unawares in his own house. Was the knife on him?"

"Yes, sir, it was. But you can look at it in another way. We know from what Duval said to Mr. Malcolm here the very night he died that he hadn't seen the Monk's face then. He'd discovered something, but it seems fairly plain it wasn't the Monk. If you think it over, he had precious little time to discover who the Monk was in between the time when Mr. Malcolm says he left the Priory, and you found him hanging in his cottage. From the fact of his evidently having been taken by surprise, since he never got the chance to draw his knife, doesn't it look as though whoever it was who went to his cottage didn't go in his disguise of a Monk? Looked at in that light, my reading of the thing is that the person who visited Duval didn't rouse any suspicion in him. He didn't know who the Monk was; some man whom he didn't suspect at all came to his house, possibly with a plausible excuse. He let him in, and before he knew where he was this person had clapped the pad over his face. We'll say there was a struggle: it looks as though the murderer was a pretty strong man. Duval was a bit of a weed, besides being weakened by the dope he took, but you try holding a handkerchief over a man's face when that man's struggling. It's not easy, and a struggle there must have been. But you can understand Duval trying too hard to wrench his assailant's hand away from his mouth to have time to try and get at his knife. For what it's worth, I found a broken plate in the kitchen, but the place was such a pig-sty there's no saying it was put there by the murderer. Still, it might have been, and we know he set the room to rights when he'd finished Duval. One of the cold-blooded ones, he is: you do find 'em sometimes. He staged the whole thing to look like a suicide, and it's the doctor's opinion he was cute enough to remove any of the pad that may have got into Duval's mouth. But that scrap you saw the doctor extract from Duval's right nostril he missed. The doctor only found it with his forceps. If it hadn't been for that it would have looked like a clear case of suicide, especially with a man of Duval's temperament. But a man don't chloroform himself when he sets out to commit suicide by hanging, and even if he did, that's ruled out by the fact that there was no trace of the bottle, nor the pad either. No, it's murder right enough, and if you ask me, murder by some person whom Duval didn't dream was likely to attack him."

Both men had listened to him in attentive silence. "If that is so," Charles said slowly, "it seems to exonerate Strange. For if I'm not very much mistaken Duval was afraid of Strange."

"But did he suspect him of being the Monk?" Peter asked.

"No, I don't know that he did, but he thought Strange had something to do with the Monk. At least, so I infer from what he said when he saw Strange come into the bar yesterday morning."

The inspector was fingering the typewritten statement. "I wouldn't go about saying Strange did this, sir," he said slowly.

"Well, naturally not, but you must admit things look pretty black against him. Did you see him after we'd left you last night?"

"Yes, sir, I saw him. You'll understand I can't tell you anything about him, but you can set your mind at rest on one point: there's nothing Strange can do that we shan't know about. So in case you were feeling that we are leaving any dangerous person at large you can be sure that his doings are known to us, and you don't stand in danger from him."

"I must say, I'm glad to hear you're keeping a watch on him," Charles said, preparing to get up. "Well, we mustn't waste your time. If there's nothing else you want me to tell you I think we'd better be pushing off."