It's only his love of interference." "Or his love of you?
I wonder which!" whispered Nick.
"Nick! Nick!" Wonder, dismay, incredulity, mingled in the cry.
But Nick had already slipped free from the clinging of her arms, and he did not pause in answer.
"Good-night, Olga _mia_!" he called back to her softly from the door.
"Don't forget to knock on the wall if you feel squeamish!" And with that he was gone.

The latch clicked behind him, and she was alone..