Number Seventeen: A Tale of Intrigue and Murder in London

When a writer emerges from a London theater, he notices an attractive young woman and an older man waiting for their car. He arrives home after a short delay and notices the older man, whom he’d overheard tell his companion he was stopping at his club, outside the building.
Before going up to his flat, Number 16, the writer sees the man enter the building and pay a brief visit to Flat 17, the home of a widow, and then leave.
The next day, the writer is the guest of an influential millionaire ...