Gloved Hand, The by Burton Egbert Stevenson (1872 - 1962)

Mr. Lester, a private investigator, and his friend Godfrey are caught up in a strange case that takes them to a large estate in the country where at midnight they witness a mysterious "falling star" that appears to burst into a shower of sparks over two white robed figures standing in the air. There is a young lady in a flowing white dress and many more twists and complications before the mystery is solved. (Summary by Don W. Jenkins)