All the while they were quietly at work.
One day, however, a messenger boy stopped them at the door of their lodgings.
He handed them a message.
Thus it read:
“My dear Brady:
“Come down to the office at once. I think I have a clew for you. “Chief of the Secret Service.”
“Ah!” said Old King Brady, with a smile. “Perhaps at last we have hit upon the right thing. Let us try it.”
So the Bradys at once went down to the Secret Service headquarters.
The chief welcomed them warmly.
“I am glad to see you!” he said. “And I believe I have valuable news for you!”
“That is what we are looking for,” said Harry.