Right now reading a 1950s novel, Edelman's A Dream of Treason. I'd describe it as a novel with an espionage element rather than as an "espionage novel" so far; there's a lot about the main character's marital problems (his wife drinks too much) and the possible development of a romance between himself and a friend's daughter who's about half his age. I expect the espionage plot will come to the fore in the author's good time. The main character (Lambert) "leaked" a Foreign Office document to a French newspaper at the command of his boss, who died in a plane disaster.
Also reading Marshall's Bob Dylan: A Spiritual Life, which seems really well-researched and level-headed.
Also reading William Ready's Understanding Tolkien and The Lord of the Rings (1969 paperback of a 1968 book), basically for historical interest as, I think, the first book on JRRT. It's a pity it had to be such a poor thing. but at least it's short. Cringe-making errors, opinionated remarks, and unintelligible passages are plentiful.
Also reading, a little bit at a time, the Penguin Classic of John Aubrey's Brief Lives -- very interesting item in my 17th-century reading project.