The Ordeal of Gilbert Pinfold is a novel by the British writer Evelyn Waugh, first published in July 1957. It is Waugh's penultimate full-length work of fiction, which the author called his "mad book"—a largely autobiographical account of a period of hallucinations caused by bromide intoxication that he experienced in the early months of 1954, recounted through his protagonist Gilbert Pinfold.