“How do you know?” said Bets. “Old Clear-Orf might be trying to solve one we don’t know about.”

“Well, ask him then,” said Pip impatiently, for he was trying to read, and Bets kept interrupting him. He didn’t really mean Bets to go and ask the policeman, of course. But she couldn’t help thinking it was rather a good idea.

“Then we should know if there was going to be something for us to solve these hols,” thought the little girl. “I’m longing to hunt for clues again - and suspects - and track down things.”

So the next time she met the policeman she went up to him. “Mr. Goon, have you got a mystery to solve these holidays?” she asked.

The policeman frowned. He wondered if Bets and the others were on the track of something he didn’t know about - else why should Bets want to know if he was solving one?

“Are you interfering in anything again?” he asked sternly. “If you are, you stop it. See? I won’t have you children messing about in jobs that properly belong to me. Interfering with the Law!”

“We’re not interfering or messing about,” said Bets, rather alarmed.

“Well, you clear orf,” said Mr. Goon. “You’ve put a spoke in my wheel before now, and I’m not having it again!”

“What wheel?” said Bets, puzzled. Mr. Goon did one of his snorts and walked off. He couldn’t bear any children, but he particularly detested the Five Find-Outers and Dog. Bets stared after him.

“Well, I didn’t get much out of him,” she thought. “What did he mean about wheels?”