Frank disappeared into his dressing room and came out with a tumbled bundle which he dropped on a chair. It was the blue suit which he usually affected.
"Now what is the joke?"
"It is no joke," said the other. "I could have sworn that I saw you less than half an hour ago in Camden Town."
"I won't pretend that I don't know where Camden Town is," smiled Frank, "but I have not visited that interesting locality for many years."
Saul Arthur Mann was silent. It was obvious to him that whoever was the occupant of 69 Flowerton Road, it was not Frank Merrill. Frank listened to the narrative with interest.
"You were probably mistaken; the light played you a trick, I expect," he said.
But Mr. Mann was emphatic.
"I could have taken an oath in a court that it was you," he said.
Frank stared out of the window.