A Candle for the Devil

Two sisters, Marta and Verónica, run a small inn in Spain that caters to female tourists whose morals meet their strict religious standards. When an American woman named Norma arrives at the inn with her infant child, one of the sisters, Marta, becomes suspicious and kills Norma in a fit of rage. The other sister, Laura, discovers evidence implicating the sisters in previous murders but ultimately witnesses their crimes firsthand when she returns to the inn and is confronted by the two women.