Poison for the Fairies

Original title: Veneno para las hadas

In 1965 Mexico City, Flavia, a wealthy yet lonely schoolgirl, befriends Veronica, a young orphan girl who has a fascination with witchcraft. Veronica convinces Flavia that she is a real witch and forces her to be her assistant. The children's games gradually become more serious and Veronica demands more from Flavia.