William Le Queux 
The four faces 

Michael Berrington is a bachelor leading a quiet life in London. Overhearing a conversation at his club one day, he becomes interested in a discussion regarding a man named Gastrell. Gastrell is somewhat of a mystery to the club members in spite of his renting a house from one of them. Berrington’s interest in Gastrell intensifies as his fiancé, Dulcie Challoner, befriends a wealthy widow, Mrs. Connie Stapleton who evidently has some type of relationship with Gastrell.