“Well, in the first place there is some very direct evidence. A revolver with one discharged chamber and a calibre which corresponded with the bullet was found on the floor of her wardrobe.” His eyes fixed and he repeated in broken words, “On-the-floor-of-her-wardrobe.” Then he sank into silence, and I saw that some train of thought had been set moving which I should be foolish to interrupt. Suddenly with a start he emerged into brisk life once more. “Yes, Watson, it was found. Pretty damning, eh? So the two juries thought. Then the dead woman had a note upon her making an appointment at that very place and signed by the governess. How’s that? Finally there is the motive. Senator Gibson is an attractive person. If his wife dies, who more likely to succeed her than the young lady who had already by all accounts received pressing attentions from her employer? Love, fortune, power, all depending upon one middle-aged life. Ugly, Watson - very ugly!”

“Yes, indeed, Holmes.”

“Nor could she prove an alibi. On the contrary, she had to admit that she was down near Thor Bridge - that was the scene of the tragedy - about that hour. She couldn’t deny it, for some passing villager had seen her there.”

“That really seems final.”

“And yet, Watson - and yet! This bridge - a single broad span of stone with balustraded sides - carries the drive over the narrowest part of a long, deep, reed-girt sheet of water. Thor Mere it is called. In the mouth of the bridge lay the dead woman. Such are the main facts. But here, if I mistake not, is our client, considerably before his time.”

Billy had opened the door, but the name which he announced was an unexpected one. Mr. Marlow Bates was a stranger to both of us. He was a thin, nervous wisp of a man with frightened eyes and a twitching, hesitating manner - a man whom my own professional eye would judge to be on the brink of an absolute nervous breakdown.

“You seem agitated, Mr. Bates,” said Holmes. “Pray sit down. I fear I can only give you a short time, for I have an appointment at eleven.”

“I know you have,” our visitor gasped, shooting out short sentences like a man who is out of breath. “Mr. Gibson is coming. Mr. Gibson is my employer. I am manager of his estate. Mr. Holmes, he is a villain - an infernal villain.”

“Strong language, Mr. Bates.”

“I have to be emphatic, Mr. Holmes, for the time is so limited. I would not have him find me here for the world. He is almost due now. But I was so situated that I could not come earlier. His secretary, Mr. Ferguson, only told me this morning of his appointment with you.”

“And you are his manager?”

“I have given him notice. In a couple of weeks I shall have shaken off his accursed slavery. A hard man, Mr. Holmes, hard to all about him. Those public charities are a screen to cover his private iniquities. But his wife was his chief victim. He was brutal to her - yes, sir, brutal! How she came by her death I do not know, but I am sure that he had made her life a misery to her. She was a creature of the tropics, a Brazilian by birth, as no doubt you know.”

“No, it had escaped me.”

“Tropical by birth and tropical by nature. A child of the sun and of passion. She had loved him as such women can love, but when her own physical charms had faded - I am told that they once were great - there was nothing to hold him. We all liked her and felt for her and hated him for the way that he treated her. But he is plausible and cunning. That is all I have to say to you. Don’t take him at his face value. There is more behind. Now I’ll go. No, no, don’t detain me! He is almost due.”

With a frightened look at the clock our strange visitor literally ran to the door and disappeared.