Author Helen MacInnes: “Decision at Delphi,” published in 1960. I’m about halfway into this book, and it is very dense with people and plot. It’s also really interesting how she and her contemporary Mary Stewart (“My Brother Michael,” also set in Greece, also published in 1960) were so influenced by World War II. That war is a key backdrop for both of these books. Really enjoying seeing how MacInnes built her very complex story. But Stewart is the more lyrical writer, in my personal estimation. Their books are still in print and also available on Kindle. I have no idea if they knew each other, if they talked about the similarities in these two books.