A homeless orphan girl is adopted by a wealthy man against his wife wishes. When the man dies, the girl endures endless humiliations under the wife's harsh grip, so she finds solace with mysterious old maid who lives near by.
Unfortunately the movie The Secret of the Spinster is not yet available on HBO Max.
| Writing | Miguel M. Delgado | Writer |
| Writing | Eugenie Marlitt | Novel |
| Writing | Francisco Reiguera | Writer |
| Writing | Juan Roca | Writer |
| Production | Vicente Saisó Piquer | Producer |
| Editing | Alfredo Rosas Priego | Editor |
| Art | Manuel Fontanals | Production Design |
| Costume & Make-Up | Sara Herrera | Makeup Artist |
| Directing | Miguel M. Delgado | Director |
| Camera | Víctor Herrera | Director of Photography |
