"As a rule, people only signal to stop in some great emergency, and then they would be anxious to call for help."
Aldred reached up, and put her hand tentatively on the cord.
"Shall I?"
There was real intention both in her eyes and in her voice.
"No, no! Aldred, stop! How can you think of doing such a dreadful thing!"
"I was only in fun, you dear goose!" said Aldred, with a rather forced laugh.
Mabel heaved a sigh of relief.
"Of course you were; what a silly I was to imagine you could be in earnest! You gave me quite a shock, all the same. I never saw anyone pretend so cleverly as you."
"Suppose I had pulled it? What would you have said to the guard when he arrived?"