Len Deighton, The IPCRESS File (1962)
This was Len Deighton’s first published novel, a first-person spy story where the unnamed narrator gets involved in an affair he never quite seems to grasp the details of. (I can’t really give away the plot details.) I’m not much of a reader of espionage thrillers, but I liked this and will probably read the later novels in the series. Michael Caine also starred in a number of movies based on the books, the “Harry Palmer” novels.
Also, this is the second book I’ve read in 2012, so there’s only 50 more to go. Woot!