Greenmantle

This book was first published in 1916; it's an adventure story from a bygone age.

The British protagonist and a few others (not all British) undertake an urgent espionage mission during the First World War, making their different ways across a Europe at war to meet up in Turkey. They experience considerable discomforts and dangers throughout, but in the end their mission is accomplished.

This is not my usual kind of reading, and I don't expect to reread it much, but it's quite readable and passes the time well enough.

I'm not sure that I've ever read it until now (2024). I noted the book briefly in my 1963 diary, but I suspect that I started it without finishing it. I turned 9 years old in 1963.