Ávila, Spain, March 28, 1526. With the help of her cousins, Teresa, who is eleven years old, writes a letter to her mother with the purpose of asking her to allow her to change her name to that of her favorite saint.
| Directing | María Pérez Sanz | Director |
| Camera | Ion de Sosa | Director of Photography |
| Art | Carmen Main | Art Direction |
| Editing | Sergio Jiménez | Editor |
| Sound | Alberto Carlassare | Sound Editor |
| Sound | Eddi Circa | Original Music Composer |
| Writing | María Pérez Sanz | Screenplay |
| Production | Cristina Hergueta | Producer |
| Production | Carmen Bellas | Producer |
| Art | Beatriz Lobo | Graphic Designer |
| Production | Cristina Hergueta | Production Director |
| Sound | Jamaica Ruiz | Sound Recordist |
| Sound | Miguel Ángel Caprara | Sound Recordist |
| Sound | Alberto Carlassare | Sound Mixer |
| Writing | Cristina Morales | Novel |
