31 Dias (31 Days) is the story of Eva (Irán Castillo), a young and beautiful psychologist and author of a series of self-help books about modern women and their love relationships. For her next bestseller she has decided to prove … Irán Castillo, Lorenzo Balducci, Alejandra Gollas, Jose Antonio Gaona, Karla Souza, Magdalena Caravallo, Alberto Agnesi Added on Amazon Prime 2021-09-13. Youtube Trailer