"What are you doing ?" he cried.

"Why have you locked the door ?" She was tugging and fumbling desperately to extract the key, her hands all clumsy in her nervous haste.

He leapt at her, but in that moment the key came away in her hand.

She wheeled round to face him, erect, defiant almost.
"Here is some devilry!" he cried.

"Give me that key." He had no need for further questions.