As an espionage story, this work reveals all the labyrinthine intricacies of the profession of the spy. In developing the plot, le Carre is able to withhold information from his readers and keep them in suspense. The Spy Who Came in from the Cold has a remarkably simple plot, is not overburdened with characters, and develops in a linear fashion. Le Carre is sparing of description, although his own familiarity with Germany is evident. The Wall, which begins and ends the novel, is presented with starkness and strength, and becomes almost a person.

Le Carre is a master of language. He is particularly gifted in the use of dialogue, often presented like an overheard conversation. It is by dialogue more than by description that the characters reveal themselves. Le Carre is able to capture the naive questioning and unquestionable dedication of Liz, the cynical disgust of Leamus, and...