- HD 1080
- Runtime: 97m.
- Status: Released
- 0
- Languages: es
- Country: Spain
- Director: Rafael Gil
- Stars: Francisco Rabal, Madeleine Fischer, Jacqueline Pierreux, Manolo Morán, Rafael Bardem
- keywords: madrid, spain, cinema on cinema, movie business, radio program, movie star, small village, movie mogul, film within a film, quiz show
- Production_studio: Aspa
- The La gran mentira is featured in the top rankings of 1956
- #41 in Top Romance Movies of 1956
- #95 in Top Drama Movies of 1956
César Neira, an almost forgotten Spanish actor, gets involved by chance with Teresa, a teacher from a small village in the province of Cáceres, who has won a radio contest. The prize is a trip to Madrid to experience just for a fortnight the life of the famous and wealthy people.