They had waited only a few minutes longer when Louise suddenly touched her chum’s arm.

“Penny, there she is! Alone, too!”

“Who, Louise?”

“Why, that girl whose hat you recovered on the Goodtime. See her coming this way?”

Penny turned to stare at the young woman who was walking hurriedly along the dock. At first glance she was inclined to agree with Louise that it was the same girl, then she was uncertain. The one who approached wore an expensive fur and carried a distinctive beaded bag.

“I don’t believe I ever saw her before,” she commented.

“I guess I was mistaken,” admitted Louise. “She’s too well dressed.”

Apparently the girl did not observe Penny and her chum, for she passed them without a glance. Hurriedly she walked a short distance down the wharf. Then, with a deft movement, she took a package from beneath her smart-fitting coat, and tossed it into the water.

Turning, she retraced her steps to the gangplank of the Goodtime. A moment later the girls saw her meet a young man in topcoat and derby who had emerged from the crowd on the dock. Entering a gray sedan, they drove away.

“I wonder what she threw into the river?” mused Penny. “Didn’t you think she acted as if she were afraid someone would see her, Lou?”