"Oh, yes," came the ready reply. "The man's name is Acton. He is a law stationer who does odd jobs for the different firms here. He is quite broken down and shabby now, but I should say that at one time he was a gentleman. You will see his business card hanging in a shop window at the corner of Preston Street--a little news-shop on the right." "I am greatly obliged to you," Field said. "I see the stamp is a two pound ten one. Was it paid for in cash or in the form of a note?" "A note--a L5 Bank of England note. I recollect getting Acton to endorse it." Field smiled to himself. Everything seemed to be going in his favour now. He tendered five sovereigns across the counter and asked the favour of the L5 note in exchange, which was granted. The note had a blue stamp on it to the effect that it had been issued by the Wandsworth Branch of the National and Counties Bank, and to that establishment Field wended his way. There a further piece of information awaited him. The note had been paid out the day before to a messenger who had come from No. 100, Audley Place, with a cheque drawn in favour of "self" by Mr. Carl Sartoris. Field could not repress a chuckle. Everything was going on as smoothly as he could expect. "And now for Mr. Acton," he said to himself. "I wonder if I dare build my hopes upon the theory that Sir Charles is--but that is out of the question. Still, there is that doctor fellow with his marvellous knowledge of Eastern mysteries. Hang me if I don't start from that hypothesis when I've got this thing through." It was an easy matter to trace Acton. Field found him in a dingy bed-sitting-room, smoking vile tobacco and eagerly reading a sporting paper. The occupant of the room turned colour when he caught sight of his visitor. The recognition was mutual, but Field did not commit himself beyond a faint smile. "I--I hope there is nothing wrong," the occupant of the room stammered. "That entirely depends upon you," Field replied. "So long as you tell the truth----" "I'll tell you nothing else," Acton said. He had risen now and was standing with his back to the fire, a tall man with a pale face and mournful eyes. "Look here, Field, there is no use playing with the fact that you and I have met before. I was in a very different position then. Now I am a broken man with no ambition beyond a wish to live honestly and to keep out of sight of my friends. I write a good hand, as you know. I have served my time for forgery. But since that I have never done anything that is in the least wrong." The speaker's words carried conviction with them. "I am quite prepared to believe it, Mr. Acton," Field said. "All I want is a little information. Tell me, have you done more than one piece of work lately?" "No. Only one. And that was just after ten o'clock to-day. A gentleman came to me and said he was a lawyer who was just setting up here." "What sort of man was he?" Field asked.