"What do you mean ?" he demanded, with an involuntary glance over his shoulder.

She interpreted that glance correctly.
"The peril is not here, Mr.Tullis.I know what you are thinking.

My father is a loyal subject.

The peril I suggest never comes to Graustark." She said no more but leaned forward, her face whiter than its wont.

He frowned, but it was the effect of temporary perplexity.