If her resemblance to the mistress of the house was as remarkable as he had been led to believe, her entrance to the place would be comparatively easy of accomplishment, and the danger of discovery correspondingly small.

It never occurred to him to question Natalie's story.

To be sure there were details he found it difficult to fully accept as true, but the girl certainly believed all she had told him.

She denied earnestly having been the one invading his room, and he believed her implicitly; yet the person who had visited him was so closely her image as to make it still seem almost an impossibility that she could be a separate individual.
Nothing less than Natalie's own word would have brought conviction.

And this person had supposed she was visiting the apartment occupied by Percival Coolidge.