The Tango Briefing.
Pretty bad adventure/spy novel. This has two appealing aspects. First, Hall is not obsessed with either technology or violence, so one does not become bored or aggrieved. Second, the main character, Quiller, is funny: he has an addicts’ attitude toward his job & a very weird attitude towards himself in that his body is always referred to as “the organism” and his mind (he thinks) is totally separate from it.