"That remark," said Mr. Barclay, "is to some extent justified. Over in Europe they say 'slow and sure,' though I don't suppose it's a maxim that's likely to appeal to young America. We'll paraphrase it into this form: 'Don't move until you know exactly what you mean to do and how you're going to set about it, and then get at it like a battering ram.'" "A battering ram must have been a clumsy, old-time contrivance," Harry objected. "There are reasons for believing it could strike very hard," said his father with a smile. "It would naturally take a long while to work the thing out," Frank broke in, addressing Mr. Barclay. "It did," the little, stout man assented. "We had to get hold of a clue here, and another there, and follow them up as far as possible without giving anybody the least idea what we were after. It might have been more difficult if one hadn't been purposely placed in our hands a week ago." "Somebody has been giving the gang away?" asked Frank. "That doesn't quite describe it," Mr. Barclay answered. "To be precise, somebody has sold them. It appears that one man a little smarter than the rest discovered that the gang was being watched. That scared him, and, as it happened, he'd had a difference of opinion with the bosses about the share he claimed to be entitled to. He didn't point his suspicions out to them, but when, as he said, they couldn't be induced to do the square thing he came along to one of my subordinates, who sent him to me. I'm not sure that I'd have got much information out of him then if I hadn't been able to convince him that he and his partners were already more or less in my hands." Frank was impressed by what he had heard. Indeed, he was conscious that he was half afraid of the man who sprawled lazily in his chair smiling at him. He appeared so easy-going and he had bantered Harry so good-humoredly, but all the time he had been following up the smugglers' trail with a deadly unwavering patience and a keenness which missed the significance of no clue, however small. Now when at last the time for action had come the boy felt that he would strike in the swiftest and most effective manner. "If there's any small part you can give us--" he said hesitatingly.