“What? Why! It is crooked.” Jimmie was dismayed. “If—if I were a crook they’d spot me by my nose.”

“Oh, no!” Tom laughed. “Take a look at mine. It’s crooked too. There are a thousand people down there below us going to lunch. If you looked at them one after the other you’d probably find they all had noses slightly off the true. Watching them go by gets to haunt you if you look too long.

“But ears,” he went back to his original subject, “people don’t fuss much with their ears. Men do not try to disguise their ears as they do their eyes and noses. That’s why I’ve taken up the study of ears. In a crowd of ten thousand I could spot the Silent Terror’s ear. Soon I shall be carrying a reproduction of it in my pocket.”

“Have one made for me,” Jimmie’s tone was eager.

“I will,” said Tom. “Be sure you study it well.”

“I’ll be the first to spot him,” said Jimmie.

“If you are so fortunate,” replied Tom. “Be on your guard. He’s a dangerous man and, as time goes on, will become more desperate.

“And now,” he laughed, “classes for the morning are over. Shall we have lunch?”

CHAPTER V
THE CANDID CAMERA CLICKS AGAIN

It was after their lunch that Tom Howe drew from an inner pocket something resembling a thin pack of cards. Though they were alone in a booth with their backs to the wall he glanced sharply about him before unfolding the packet which proved to be ten small pictures glued to a single strip of black cloth.