Mr. Grex of Monte Carlo
I've been on an Oppenheim roll, ever since Irina bought me my third Oppy — The Great Impersonation.
Mr. Grex of Monte Carlo is classic Oppenheim. A British agent, assisted by a plucky American millionaire manage to foil a dastardly plan by a German spy and a Russian Grand Duke to break Britain by destroying its fleet.
The place of action is, naturally, Monte Carlo. Now I now why Bingo Little has to visit Monte for his wife, who needs a bit of couleur locale. I do hope that Oppenheim was able to write from experience; if not then I've been taken in completely. It feels as if he knew the geography of the pesthole.
Oh, and the millionaire marries the daughter of the Grand Duke. That's not a spoiler. Not with this kind of book. What happens between the British agent and his wife, though, that I will keep secret...