Belgian novelist of political conscience and an energetic, darkly humorous style.

Abandoning his theological studies at the Catholic University of Leuven (Louvain), Belgium, Detrez traveled to Brazil at age 24 and, while teaching French literature there, became involved in revolutionary politics. Deported by the Brazilian authorities, he went to Algeria and Portugal before settling in Paris in 1978. He became a French citizen in 1982.

Detrez's first published works were translations of Brazilian authors and revolutionary essays. As his political disillusionment grew, he turned to autobiographical fiction. Ludo (1974) is a fictional account of his World War II childhood, and Les Plumes du coq (1975; “The Plumes of the Rooster”) treats the 1951 abdication of the Belgian king Leopold III. Detrez's most celebrated novel is L'Herbe à brûler (1978; A Weed for Burning), in which he recounts with carnivalesque glee the fatal return of his disillusioned protagonist—who has wandered for years in South America—to a Europe sapped of its revolutionary zeal. Criticism of leftist intelligentsia continued to be a theme in Detrez's later work. He also published one book of poetry, Le Mâle Apôtre (1982; “The Manly Apostle”), and his novel La Ceinture de feu (1984), about a French scientist in war-torn Nicaragua, was translated into English as Zone of Fire.