“She was talking to the woman behind the counter. I entered as well. ‘It is late,’ I heard her say, or words to that effect. The woman was excusing herself. ‘It should be there before now,’ she answered. ‘It took longer, being out of the ordinary.’ They both stopped and looked at me, so I asked some questions and then left the shop.”

“You did excellently well. What happened next?”

“The woman came out, but I had hid myself in a doorway. Her suspicions had been aroused, I think, for she looked round her. Then she called a cab and got in. I was lucky enough to get another and so to follow her. She got down at last at No. 36, Poultney Square, Brixton. I drove past, left my cab at the corner of the square, and watched the house.”

“Did you see anyone?”