Grey Mask
Author: first_name: Patricia
last_name: Wentworth
Language: English
Year: 1929

Charles Moray is jilted on the eve of his wedding.  He then leaves the country for a few years. Upon returning, he finds strangers are using his house.
As he watches from a childhood hideaway he sees a man having a discussion with several people one of whom he recognises.  - Summary by Sandra Cullum