Great Britain and/or have main characters of British nationality. The work which best shows Marshall's affection for Scotland may be The Black Oxen (1972), which Marshall billed as a Scottish Epic. Several of Marshall's books have themes about espionage and intrigue, such as Luckypenny (1937), A Girl from Lübeck (1962), The Month of the Falling Leaves (1963), Operation Iscariot (1974), An Account of Capers (1988), The Accounting (AKA The Bank Audit) (1958), and Only Fade Away (1954). Some of his novels feature major characters who, like Marshall himself, have suffered the loss of a limb. Often major characters from one novel appear in minor roles in other novels. Marshall was relatively popular in his time. His books were reviewed in major publications on both sides of the Atlantic. At least two of his books were Book of the Month Club selections; Vespers in Vienna (1947) and The World, the Flesh, and Father Smith (AKA All Glorious Within) (1944), in June 1945. An Armed Services Edition of The World, the Flesh, and Father Smith was also produced. His books were published in at least nine languages – English, Dutch, French, German, Italian, Polish, Czech, Portuguese & Spanish. Film, stage and television adaptations His 1931 novel Father Malachy's Miracle was adapted for the stage in 1938 by Brian Doherty. The novel was adapted for presentation on The Ford Theatre Hour, an American TV show, in 1950. In 1961, the novel was the basis for the German film Das Wunder des Malachias directed by Bernhard Wicki and starring Horst Bollmann, Richard Münch and Christiane Nielsen. His 1947 novel Vespers in Vienna was the basis of the 1949 film The Red Danube starring Walter Pidgeon, Ethel Barrymore, Peter Lawford, Angela Lansbury and Janet Leigh. George Sidney directed. After the movie's release the novel was re-issued under the title The Red Danube. His 1953 novel The Fair Bride was the basis of the 1960 film The Angel Wore Red starring Ava Gardner, Dirk Bogarde, Joseph Cotten and Vittorio De Sica. It was the last film directed by Nunnally Johnson. His 1952 book, The White Rabbit, recounting the World War II exploits of secret agent F. F. E. Yeo-Thomas, was made into a TV mini-series in 1967. His 1963 novel The Month of the Falling Leaves was the basis of the 1968 German TV show Der Monat der fallenden Blätter. Marshall co-wrote the screenplay with .