"I reckoned it would be no good worrying you with a petty little
business like this."
"I see." He paused a moment. "This petty little business, as
you call it, bears directly on a very big business, bigger
perhaps than either you or Miss Tuppence know. If this boy is
alive, he may have very valuable information to give us.
Therefore, we must find him."
"Yes, but how?" cried Tuppence. "I've tried to think of
everything."