That Affair Next Door by Anna Katharine Green

The gentleman who stepped from the carriage and entered Mr. Van Burnam's house at twelve o'clock that night produced so little impression upon me that I went to bed satisfied that no result would follow these efforts at identification.

And so I told Mr. Gryce when he arrived next morning. But he seemed by no means disconcerted, and merely requested that I would submit to one more trial. To which I gave my consent, and he departed.