I love Patricia Wentworth novels. I've read her entire Miss Silver series of more than thirty mysteries written between 1928 and 1961. I wish there were more of them. She also wrote three other short series of books and about twenty-five stand-alone novels. "Mr. Zero" is one of Wentworth's stand-alone stories, written in 1938.
All of Wentworth's stories are small stories in that they don't involve plots to blow up the world. They are mysteries of theft or murder involving ordinary people and families caught in some nefarious doings as they go about their daily lives in or near London. "Mr. Zero" drifts a little from that common thread, as central to the story is a scheme to steal information from the Home Secretary. Mr. Zero is our villain, and his identity is unknown until the culmination of our story.
The plot involves Mr. Zero blackmailing the ditsy young wife of a prominent, successful businessman who has important contracts with His Majesty's Government. Although the dimwitted, virtually brainless, beautiful wife is a central character in our story, the protagonists are her cousin and sometime friend, Gay Hardwicke, and an up-and-coming young man, Algy Somers, who may or may not be falling in love with Gay. With or without Gay's encouragement, Algy is pulled into a position of suspicion because he works for the Home Secretary and has had access to the papers and information that is targeted by the scheme and subsequently stolen.
That's as much of the plot as I'll provide, but I will give you reasons to read Ms. Wentworth's story. She is a brilliant storyteller and master of using dialogue to define who and what her characters are while she advances her story. Every story is a balance between background, character development, and plot movement. Some authors lean far too heavily toward background and motivation, or detailed descriptions of the color of the drapes or paint on the garden furniture. Wentworth stories are always well-balanced, and they never allow her readers to get bogged down in too much detail. She gives us just enough supporting information, mixed with an effective use of dialogue.
"Mr. Zero" is a typical Wentworth page-turner. We want the good guys to succeed, and the bad guys to fail. In many of her mysteries, with this one being no exception, she keeps us guessing who the villain/s is/are until the denouement, but she never leaves her readers hanging and wondering who did what to whom or why. As was often the case with Patricia Wentworth novels, I find myself sorry that the story has ended. I loved "Mr. Zero," and think you will, too.