He started to write novels late in life, but he obtained an overwhelming success with El manuscrito carmesí (The Crimson Manuscript, Planeta Prize 1990), Águila Bicéfala (Two-Headed Eagle, 1994), La regla de tres (The Rule of Three, 1996) and La pasión turca (Turkish Passion, 1993), adapted for the cinema by Spanish director Vicente Aranda and Más allá del Jardín (Beyond the Garden, 1995), adapted by Pedro Olea.
He subsequently hosted many other programs, finally becoming presenter of the interview program A fondo (1976–1981), in which he had the opportunity to interview Salvador Dalí, Jorge Luis Borges, Octavio Paz, Julio Cortázar, Camilo José Cela, Bernardo Bertolucci, Frederick Forsyth, Elia Kazan, Antonio Gala, Atahualpa Yupanqui, Francisco Umbral, Julio Iglesias and Silvio Fanti among others.
Los bellos durmientes (The sleeping beauties) is a theater play by Antonio Gala, premiered in 1994.
San Antonio | Antonio Vivaldi | Antonio Banderas | San Antonio Spurs | Gatpuno Antonio J. Villegas Cultural Awards | Antonio Villaraigosa | Antonio Margarito | Antonio López de Santa Anna | Port Antonio | Antonio Canova | Antonio Inoki | Antonio Gramsci | António de Oliveira Salazar | Antonio Rotolo | Antonio Meucci | Antonio Esfandiari | Marco Antonio Muñiz | Antonio Scarpa | Antonio José de Sucre | Teo Antonio | José Antonio Ocampo | Antonio Stradivari | Antonio Saura | Antonio Luna | Antonio López García | Antonio da Sangallo the Younger | Roman Catholic Archdiocese of San Antonio | Juan Antonio Samaranch | Juan Antonio Corretjer | Estadio Monumental Antonio Vespucio Liberti |
Like in old pastoral romances, many of the characters from Caso Karen are depictions of real people: in "Karen del Korral" Lucía Etxebarria's personality traits are observed; "Carina Martinell" is Carmen Balcells; "Armando Sala" is Antonio Gala, etc.