As soon as I had settled myself in London I took the earliest opportunity of calling upon Dawson at the Yard. He was absent, but his Deputy, who knew my name, received me kindly. He explained that it would not be easy to find Dawson. "We never know where he is or what he is doing. I suppose that the Chief knows; certainly no one else. How can one be Deputy to a man who never tells one what he is doing or where he may be found?" I agreed that the post seemed difficult to fill adequately. "I wish I could chuck it as Froissart did when he went back to Paris. Have you ever seen Madame Gilbert?" he inquired eagerly. I observed that Madame did me the honour to be my friend. "So you know her, do you? She's a clinker of a woman. Hot stuff, but a real genuine clinker. She could do what she pleased with old man Dawson; make him fetch and carry like a poodle. She's the only woman born who ever turned Dawson round her fingers." I observed rather stiffly that Madame Gilbert was a lady for whom I had a very high regard, and that the expression "Hot stuff" was hardly respectful. "Hum!" said the Deputy, eyeing me with interest. "So she has made a fool of you like she has of the rest of us. Even the Chief gets down on his rheumaticky old knees and kisses the carpet of his room after she has trodden on it." The Deputy tended to become garrulous, and I cut him short with an inquiry for Dawson's exact address. He lived in Acacia Villas, but I was without the precise number. The Deputy told me, and promised to inform Dawson of my visit at the earliest moment. "It may be to-day, or next week, or next month. It may not be till the War is over"--an expression which has come into colloquial use as a synonym for the Greek Kalends. I thanked the officer, and withdrew somewhat annoyed. It appeared that Dawson was not far away, for a letter from him reached me two days later at my club. It was an invitation to visit his home and to dine with him on the following Sunday at one o'clock. Enclosed was a plan designed to assist me in penetrating the mazes of Tooting. That Sunday was a beautiful day in May, and I wandered down with plenty of time to spare to provide against the danger of being "bushed." But with the aid of Dawson's thoughtful plan I found Primrose Road without difficulty. The hour was then 12.15, and the house deserted. Dawson and his family were at chapel. I had forgotten what I had heard months before of Dawson's fervour as a preacher upon Truth until reminded of it by a constable whose beat passed the house. "If you are looking for Chief Detective Inspector Dawson," said he, "I can show you where to find him in chapel. He will be holding forth just now." The opportunity of seeing Dawson as he really was--known certainly only to his wife and to God--and of seeing him as a preacher, spurred me into active interest. "My relief is coming now," said the constable; "as soon as I have handed over I will show you the way."