"I know him, but I cannot say I know any good of him," rejoined the butler severely. "Young Tom Caldew was born and bred in this village, and an idle young vagabond he was. Many a time have I dusted his jacket for stealing chestnuts in our park. The place was well rid of him, I take it, when he ran away to London and joined the police force. No, sir, I really couldn't see myself confiding in young Tom Caldew." "And why have you confided in me now?" "Well, sir, it was the arrest of the young woman that set me thinking, and caused me to wonder whether I'd done right in keeping this back. What I thought I saw that night may have been merely fancy on my part, but it took on an added importance in my mind when Miss Rath was arrested for murdering Mrs. Heredith. It seemed to me as though I might be doing some sort of injustice to her by not telling about it, and I wouldn't like to have that on my conscience after the way things turned out. But I thought it was too late to say anything after they had arrested Miss Rath and taken her away. Then Mr. Philip got better from his illness and went to London to fetch you. The same evening I heard Miss Heredith and Mr. Musard talking at the dinner table about the murder, and I gathered from what they said that Mr. Philip thought the detectives had made a mistake in arresting Miss Rath. Then I decided to tell you when you arrived, but I couldn't summon up my courage to do so until now," concluded the butler simply. "I hope I have done right, sir." "You have certainly done right in not keeping the story to yourself any longer," said Colwyn. "Before I leave here you had better show me the place in the woods where you thought you saw this man." "I shall be happy to do so, sir. I should like to thank you for listening to me. It is a weight off my mind." "I shall be going almost immediately," continued Colwyn. "I think the best plan will be for you to meet me in the carriage drive, near the spot. Can you manage that?" "Quite easily, sir." "Excellent. And now, as you go downstairs, I should be glad if you would tell Mr. Musard that I should like to see him in my room before I go." "Very well, sir. Afterwards you will find me waiting at the bend of the carriage drive where it winds round the lake." Colwyn nodded his comprehension, and Tufnell left the room with a relieved countenance. A few moments later there was another knock at the door. In response to Colwyn's invitation the door opened, and Musard appeared. "Tufnell said you wished to see me," he said, with an inquiring glance from beneath his dark brows. "Yes. I should be glad if you would give me a description of the missing necklace. It will be useful in tracing it."