"When did you have it last, sir?" asked an old gentleman in the next seat.
"At the Clifton railroad station, sir. I bought tickets there."
"Are you sure you put back the wallet into your pocket?"
"Yes, I am positive."
"There must be a pickpocket on the train then."
"But I haven't exposed myself," said Kirby puzzled. "I took my seat here, with my boy, and have not stirred since."
"Your son, I suppose?"
"No; he is a boy in my employ."
"Humph!" said the old man, eying Dean dubiously.