“Now look again.”

Once more Stanley shook his head.

“No, sir, it’s no good. I couldn’t say for sure. You see that photograph shows his hair and his forehead and his eyes. Well, I didn’t see any of those. He had tinted glasses and he wore his hat low down near his eyebrows. I couldn’t tell. It might have been him and it might not.”

“Well, if you can’t you can’t, and that’s all there is to it. Now another point. Have you the twenty-pound note?”

The manager disappeared, returning in a moment with a handful of money.

“Here are seven twenty-pound notes: all of that value we hold,” he explained. “I cannot tell you certainly whether that paid in by your friend is among them; but it probably is, as the cashier thinks she did not give such a note in change and no lodgment was made at the bank since the sale.”

Eagerly French compared the numbers of the seven with those on his list, but this time he had no luck. If one of these had come from Starvel it was one of which Tarkington had not retained the number.

In spite of this French was certain that he had discovered the truth. But he felt that before acting on his theory he must put it to the proof. Fortunately there was a very obvious way of doing so. If he traced another sale and found that another £20 note had been tendered, no further doubt could possibly remain.

Pausing only to ascertain from the salesman that his customer had spoken with a Scotch accent, French hurried down the street to the next address on his list. There he had a somewhat different question to put to the manager. He was looking for a man who had within the last three or four days bought a wedding ring and who had paid for it with a £20 note. No, the manager need not be apprehensive. The note was good and the whole business in order: it was simply a question of tracing the man.

Inquiries speedily produced the desired information. A Mr. Russell was sent for who had sold the ring in question. He remembered the purchaser, a slightish man of medium height with a heavy black moustache, a sallow complexion and tinted glasses. Owing to the latter he had not noted the colour of the man’s eyes, but he had observed that his hair was long and very dark and that his hands were small. He thought the man might be the original of the photograph, but he could not be sure. When the bill had been made out the man had searched his pockets and had been unable to produce sufficient change. He had said: “I’m afraid I’m short: I thought I had another ten-shilling note. Can you change twenty pounds?” The salesman had replied, “Certainly, sir,” and the man had handed over a £20 note. Both the salesman and the cashier had examined it carefully and both were satisfied it was genuine. Unfortunately it had since been paid away and they could not therefore produce it.