Never in all her life had she wanted so much to scream. The precious Bible was still under her arm. Those cold eyes were fixed upon her.

Ten seconds of thought assured her that she was in no immediate danger. The shops were still open. She was surrounded by friends. In her brief stay on the street she had made many friends. Max Schmalgemeire, the baker, stood in his door; so too did Mamma Lebed, who sold geese. Peter Rapport was turning his hot dogs. Even Madam Jakolev, the gypsy fortune-teller, whom she strongly suspected of carrying a dagger up her sleeve, was a welcome sight at that moment.

“I merely wanted to ask you a question.” The man was polite enough. “Do you know,” his words were distinct and cold, “this girl Nida McFay is a police character?”

“Po—Police?” Grace stared.

“Practically that. Frank Morrow’s is the only place she could sell books in this city. He is stubborn, foolhardy. Just thought I’d warn you. I am J. Templeton Semp, a detective.”

He tipped his hat and was gone, leaving Grace with a sinking sensation at the pit of her stomach.

“A police character!” she whispered. “How could she be?”

She was to hear more of Nida next morning, for the “Whisperer” was to be with her once more at dawn.

CHAPTER XVII
“THE EYE”

As we have said, it was dark when Johnny Thompson finally returned to the “Street of Mystery,” as he had come to call it. Felix’s answer to his excited questioning at an earlier hour had been strange. Yes, he knew where the men were that Johnny had seen in that animated picture—at least, he knew where they had been when Johnny looked at them; they were in the house down the street where he and Johnny had planted wires and instruments. Had Johnny really seen the men?