.

Certain! She was standing erect, her hands held down by her sides and clenched together till the knuckles were white; all her body strung high--like an over-pitched violin.

Now she raised her right hand and flung it downward with a passionate jerk.
'Answer me!' she cried imperiously.

'Answer me! Why are you playing with me?
Did you see Leonard Everard last night?
Answer me, I say.
Harold An Wolf, you do not lie! Answer me!' As she spoke Harold grew cold.

From the question he now knew that Stephen had guessed his secret.