La frontera de Dios is a 1965 Spanish drama film directed by César Fernández ArdavÃÂn, who wrote it along with José Luis MartÃÂn Descalzo and starring Alicia Altabella, Mercedes Barranco, Frank Braña. It is based on the novel by José Luis MartÃÂn Descalzo, which won the inaugural Premio Nadal in 1944.