“No, sir, never crossed the door-step.”

“I suppose you know that Mr. Millicent was found dead at this desk with a stab in his neck? That’s him above the mantel. They say it’s very like him and, oddly, something like me.”

“I was told about that, sir. A harmless-looking gentleman, I should say.”

“And you’ll probably remember that the only person on whom suspicion really fell was Mr. Millicent’s gardener. I think that’s common knowledge, too.”

“Yes, sir, it is, but he cleared himself somehow, got out of the country, and hasn’t been seen since.”

“Well,” said Derrick slowly, “that’s the man you found in the cottage, the late gardener of Beech Lodge, and I’ve engaged him to work for me. Can you guess why, constable?”

The policeman’s mouth opened wide. “But he’s the one who the sergeant thinks—” He broke off confusedly, while over his face spread a look of dawning astonishment and admiration. “By George, sir, but you’ve done a bold thing, and there’s not many would have done it. Perhaps you’re on the right track. But what brought the fellow here again into the middle of it?”

Derrick smiled grimly. “Now you’re asking too much. We haven’t come to that yet, and there’s no immediate hurry. Main thing is, he’s here and settled for the present. That gives one time to think. As for my end of it, I may be on the right track, and I may not. At any rate, I’m going to make a push for it. So far, I’m trying to piece some of the bits together, and Martin’s arrival is one of them. There’s bound to be a good deal more. So don’t disturb our friend in the cottage, for I fancy he’ll be rather badly needed. And, look here, do you think the sergeant will be willing to have a talk about this matter?”

“If you’re on the track of the man who killed Mr. Millicent, the sergeant would walk twenty miles to see you. I think he dreams about that case every night. It’s a sort of reflection on the police force of Bamberley. It hurts him. That’s the way he feels still.”

“Good! But perhaps it would be better if I went to see him. I’ll do that within the next few weeks. Meantime do you have to report this visit?”