Relatos de lo inesperado es quizá su libro más universalmente famoso, en el que demuestra de forma plena la afirmación: «La mente de Roald Dahl es inequívocamente malévola y perversa» (The Washington Post). En efecto, el autor despliega de manera magistral su mortífero ingenio y su macabro sentido del humor a lo largo de estos cuentos, rematados con desenlaces tan imprevistos como certeros.

Tales of the Unexpected is perhaps his most universally famous book, in which he fully demonstrates the statement: "Roald Dahl's mind is unmistakably malevolent and perverse" (The Washington Post). Indeed, the author masterfully displays his deadly wit and macabre sense of humor throughout these stories, which end with endings as unexpected as they are certain.