"Ah!" was all he said. "And the other fellow?"
"Small, dark, black-haired, with a coat much too big for him. His nose was sharp, and he kept looking over his shoulder."
"Anything else?"
"I'm afraid that's all, except that his hands were dirty as if they had been in ink or grease or something. Maybe they hadn't, though."
The inspector beamed upon him.
"You have a very observing son, Mr. Burton, very! He's a fine lad. You should be proud of him."
"Has he helped you at all?"
"At all? He has given me precisely the information I was after."
"And you think you could identify the men?"
"I know them already."