Veneno para las hadas

Graciela (Veronica in some edits) is a young orphan living alone in a dilapidated villa with her invalid grandmother and her superstitious nanny. The nanny fills Veronica's mind with sinister tales of witches, which she insists are real. Rather than being frightened, Graciela often comforts herself with these stories to feel more powerful than the girls at her parochial school, who mock and ostracize her for her strangeness.

Shy, lonely Fabiola (Flavia in some edits), who comes from a very wealthy family, arrives as a new student. Graciela envies Fabiola's material wealth, as well as her doting parents. Hoping to impress Fabiola, Graciela boasts she is a real witch who can make anything she wants happen. Fabiola, who was raised an atheist, is skeptical of Graciela's claims, but also fearful. To convince her, Graciela takes credit for a series of strange coincidences by telling Fabiola that she caused them with black magic. Fabiola finds herself more and more terrified of Graciela, to the point of giving Graciela her most cherished possessions and obeying her whenever she asks. Delighting in her new power, Graciela continues to arrange frightening events in order to keep her new friend in her thrall.

Graciela's demands culminate in a request to be taken along on Fabiola's family vacation to a remote ranch in the country. There Graciela announces her plan to make a poison for the fairies, which are said to be the natural enemies of witches. Fabiola becomes even more terrified at the thought of Graciela's power once the fairies are destroyed, but continues to help Graciela gather materials for the "poison," requiring them to sneak out late at night and trespass into areas they are forbidden to go. When they are finally caught, Fabiola blurts out their plans to her parents, who sternly chastise both girls and tell them that witches aren't real.

As punishment--and to reassert her hold over Fabiola--Graciela demands Fabiola give her her beloved pet dog and tells her that their plan will continue. This is the final straw for Fabiola, and she is finally compelled to stop Graciela by locking her into a barn and setting it on fire, where Graciela dies in the blaze. [1] [2]

• Venenno para las hadas at AllMovie
• Venenno para las hadas at IMDb
• Venenno para las hadas at Rotten Tomatoes
• Tec de Monterrey Review
• Revista Cinefania Review