A lacuna is an unfilled space, or in the case of Barbara Kingsolver’s novel, a cavity separating one body of water from another. The title of this book plays a part in the story, where its protagonist encounters such a cavity while diving in the ocean in Mexico as a young man. Harrison Shepherd is the son of American and Mexican parents, and he spends his early adulthood in Mexico after growing up there. By chance, he is introduced to the family of the Mexican artists Diego Rivera and his wife Frida Kahlo. Later he is introduced to Lev Trotsky, a Russian communist fleeing from Stalin’s takeover of rule following the Russian revolution. He becomes Trotsky’s secretary, remaining so until his assassination by an agent of Stalin shortly before World War II. Following that, Shepherd travels to the United States where he becomes a successful author, writing two novels on Mexico’s ancient history that win him rave reviews.
But following the war, with the Red Scare’s outbreak, Harrison’s past association with known communists becomes a red flag that upends his position as a respected author. Guilt by association condemns his literary output to the censored list. The author, a shy homosexual, finds his life destroyed and erased when he too is labeled a communist, and the texts of his novels are used against him.
The novel is presented in the form of a diary that Shepherd has kept throughout his life. It is a document preserved by his secretary, Mrs. Brown, who resists burning it even though Shepherd insists she do so. The Lacuna is a story of a dual citizen who feels neither at home in the United States or Mexico. More importantly, it presents a detailed example of how the House Un-American Activities Committee, in the years following World War II, was able target innocent citizens and destroy their lives merely because they interacted with people on the far left of the political spectrum. It proves to be a warning of how easily an individual’s life can be destroyed on the evidence of association, no matter how flimsy.