They were crossing the lagoon bridge, Willie, Danby, Florence, Rosemary and Jeanne, when of a sudden Danby Force exclaimed in a hoarse whisper, “There! There she is! The dark lady, the spy! See that split ear? I’d know her anywhere by that. There can be no doubt of it. Her ears have evidently been pierced for ear-rings, and one of the rings at some time must have been torn through the flesh, leaving a disfigurement. Yes, that’s the spy, I’m sure of it.”

“The spy! The spy!” came from the others. Could a moment more thrilling and more impossible be imagined? Here they were not twenty feet from the one they sought. And that twenty feet packed tight with writhing, twisting, screaming revelers of Hallowe’en, the end of the Fair!

Then, as if to redouble the suspense, someone threw a great switch. As if by magic, the entire grounds went dark.

“Oh! Oh! Oh!” came the murmurs of surprise, thrill and horror, from the streets many miles long, all packed with humanity.

The effect was strange. In a crowd of many thousands each individual feels very much alone. Florence felt Rosemary’s grip tighten on her shoulder as she, in turn, clutched at Willie’s coat. Danby Force alone did not lose his poise.

“Don’t lose her,” he whispered. “This is midnight. The lights will be on again soon. Then we must get her.”

He was not mistaken. Like the sudden dawn of a tropical day, the lights flashed on. The Sky Ride towers turned to tall stems of light. Masses of red, orange and green shone on every side. From the loud-speaker came the notes of a bugle, the high clear notes of “Taps.” For the moment, so great was the feeling that came welling up from the very center of her being, Florence forgot the spy. Then, with lips that quivered, she whispered to Willie:

“Where is she?”

“There! There! Just ahead! I’ll get her.” Willie lunged forward.

But the crowd still surged about them. He moved slowly. And the dark lady, apparently unconscious of the fate that lurked so near, also moved on with the throng.