"Never mind, Mr. Goon," said Fatty comfortingly. "I can tell the Inspector where the pearls are, and how you can catch Number Three if you want to."

Mr. Goon stared disbelievingly at Fatty. "Gah!" he said. "You make me tired. Talking a lot of tommy-rot! I don't believe a word of it!"

"What do you mean, Frederick?" said the Inspector, startled.

Fatty drew the pearl necklace out of his pocket. Mr. Goon gasped and his eyes bulged more than ever. The Inspector stared in amazement too. He took the pearls from Fatty. All the children crowded round in excitement.

"Frederick! These are the missing pearls! A double row of the very finest graded pearls there are," said the Inspector. "My dear boy—where did you get them!"

"Oh—we played a little game of Hunt-the-Thimble with Bets—and she told us where they were," said Fatty, and Mr. Goon gave a disbelieving snort. "They were round Queen Elizabeth's neck, in the Waxworks Hall, Inspector—a very clever place—and Bets thought of it!"

"Certainly a very clever place," said the Inspector, "and a very clever thought of yours, little Bets, if I may say so!" he said, turning to the delighted little girl. "They must have been shining there under the noses of hundreds of people today—and nobody so much as guessed! But now, Frederick—how do you propose that we lay hands on Number Three?”

"Well, sir—he knows that the pearls were hidden in the Waxworks Hall," said Fatty, "and maybe knows too that they were on Queen Elizabeth's neck—so he's bound to go back for them, sir, when every one has gone, and the Hall is dark and empty. Oh, sir—could I come and hide in the Hall tonight when you do your spot of arresting!"

"No," said the Inspector. "I'm afraid not. I'll have three men posted there. See to that straight-away, please, Goon. Er—I'm sure we can congratulate the Find-Outers on solving our problems for us in such a praiseworthy way—don't you think so, Goon? "

Goon murmured something that sounded suspiciously like "Gah!"