As he felt for the electric button his hand encountered another hand, that grasped his with an iron grip, gave his wrist a vicious twist, pushed him violently away and was gone.
David gave an involuntary cry of pain as he felt for the switch again.
In another moment he had found it and the hall was again flooded with light.

Instantly he looked about for the vicious person who had twisted his wrist, but he was alone in that part of the hall.
The excitements of that evening, however, were not yet at an end.

People began running toward the last booth.

There were cries and exclamations, and David, who had followed quickly after them, arrived there just in time to meet Mr.Harlowe carrying the limp figure of his daughter Grace in his arms.

He deposited her on four chairs placed in a row, a bottle of smelling salts was put to her nose, while Hippy and Reddy ran for water.
Grace opened her eyes almost immediately and sat up.
"I'm not hurt," she said.